In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).

[Q]: Context: Rheumatoid arthritis (RA) is a long-term autoimmune disorder that primarily affects joints. It typically results in warm, swollen, and painful joints. Pain and stiffness often worsen following rest. Most commonly, the wrist and hands are involved, with the same joints typically involved on both sides of the body. The disease may also affect other parts of the body. This may result in a low red blood cell count, inflammation around the lungs, and inflammation around the heart. Fever and low energy may also be present. Often, symptoms come on gradually over weeks to months.
While the cause of rheumatoid arthritis is not clear, it is believed to involve a combination of genetic and environmental factors. The underlying mechanism involves the body's immune system attacking the joints. This results in inflammation and thickening of the joint capsule. It also affects the underlying bone and cartilage. The diagnosis is made mostly on the basis of a person's signs and symptoms. X-rays and laboratory testing may support a diagnosis or exclude other diseases with similar symptoms. Other diseases that may present similarly include systemic lupus erythematosus, psoriatic arthritis, and fibromyalgia among others.
The goal of treatment is to reduce pain, decrease inflammation, and improve a person's overall functioning. This may be helped by balancing rest and exercise, the use of splints and braces, or the use of assistive devices. Pain medications, steroids, and NSAIDs are frequently used to help with symptoms. A group of medications called disease-modifying antirheumatic drugs (DMARDs), such as hydroxychloroquine and methotrexate, may be used to try to slow the progression of disease. Biological DMARDs may be used when disease does not respond to other treatments. However, they may have a greater rate of adverse effects. Surgery to repair, replace, or fuse joints may help in certain situations. Most alternative medicine treatments are not supported by evidence.
RA affects between 0.5 and 1% of adults in the developed world with between 5 and 50 per 100,000 people newly developing the condition each year. Onset is most frequent during middle age and women are affected 2.5 times as frequently as men. In 2013, it resulted in 38,000 deaths up from 28,000 deaths in 1990. The first recognized description of RA was made in 1800 by Dr. Augustin Jacob Landré-Beauvais (17721840) of Paris. The term "rheumatoid arthritis" is based on the Greek for watery and inflamed joints.
Signs and symptoms.
RA primarily affects joints, but it also affects other organs in more than 1525% of individuals., Fibromyalgia (FM) is a medical condition characterised by chronic widespread pain and a heightened pain response to pressure. Other symptoms include feeling tired to a degree that normal activities are affected, sleep problems, and troubles with memory. Some people also report restless legs syndrome, bowel or bladder problems, numbness and tingling, and sensitivity to noise, lights or temperature. Fibromyalgia is frequently associated with depression, anxiety, and posttraumatic stress disorder. Other types of chronic pain are also frequently present.
The cause of fibromyalgia is unknown; however, it is believed to involve a combination of genetic and environmental factors with half the risk attributed to each. The condition runs in families and many genes are believed to be involved. Environmental factors may include psychological stress, trauma, and certain infections. The pain appears to result from processes in the central nervous system and the condition is referred to as a "central sensitization syndrome". Fibromyalgia is recognized as a disorder by the US National Institutes of Health and the American College of Rheumatology. There is no specific diagnostic test. Diagnosis involves first ruling out other potential causes and verifying that a set number of symptoms are present.
The treatment of fibromyalgia can be difficult. Recommendations often include getting enough sleep, exercising regularly, and eating a healthy diet. Cognitive behavioral therapy may also be helpful. The medications duloxetine, milnacipran, or pregabalin may be used. Use of opioid pain medication is controversial with some stating their use is poorly supported by evidence and others saying that weak opioids may be reasonable if other medications are not effective. Dietary supplements also lack evidence to support their use. While fibromyalgia can last a long time, it does not result in death or tissue damage.
Fibromyalgia is estimated to affect 28% of the population. Females are affected about twice as often as males. Rates appear similar in different areas of the world and among different cultures. Fibromyalgia was first defined in 1990 with updated criteria in 2011. There is controversy about the classification, diagnosis, and treatment of fibromyalgia. While some feel the diagnosis of fibromyalgia may negatively affect a person, other research finds it to be beneficial. The term "fibromyalgia" is from New Latin, "fibro-", meaning "fibrous tissues", Greek  "myo-", "muscle", and Greek  "algos", "pain"; thus the term literally means "muscle and fibrous connective tissue pain"., A burn is a type of injury to skin, or other tissues, caused by heat, cold, electricity, chemicals, friction, or radiation. Most burns are due to heat from hot liquids, solids, or fire. Females in many areas of the world have a higher risk related to the more frequent use of open cooking fires or unsafe cook stoves. Alcoholism and smoking are other risk factors. Burns can also occur as a result of self harm or violence between people.
Burns that affect only the superficial skin layers are known as superficial or first-degree burns. They appear red without blisters and pain typically lasts around three days. When the injury extends into some of the underlying skin layer, it is a partial-thickness or second-degree burn. Blisters are frequently present and they are often very painful. Healing can require up to eight weeks and scarring may occur. In a full-thickness or third-degree burn, the injury extends to all layers of the skin. Often there is no pain and the burn area is stiff. Healing typically does not occur on its own. A fourth-degree burn additionally involves injury to deeper tissues, such as muscle, tendons, or bone. The burn is often black and frequently leads to loss of the burned part.
Burns are generally preventable. Treatment depends on the severity of the burn. Superficial burns may be managed with little more than simple pain medication, while major burns may require prolonged treatment in specialized burn centers. Cooling with tap water may help pain and decrease damage; however, prolonged cooling may result in low body temperature. Partial-thickness burns may require cleaning with soap and water, followed by dressings. It is not clear how to manage blisters, but it is probably reasonable to leave them intact if small and drain them if large. Full-thickness burns usually require surgical treatments, such as skin grafting. Extensive burns often require large amounts of intravenous fluid, due to capillary fluid leakage and tissue swelling. The most common complications of burns involve infection. Tetanus toxoid should be given if not up to date.
In 2013, fire and heat resulted in 35 million injuries. This resulted in about 2.9 million hospitalizations and 238,000 dying. Most deaths due to burns occur in the developing world, particularly in Southeast Asia. While large burns can be fatal, treatments developed since 1960 have improved outcomes, especially in children and young adults. In the United States, approximately 96% of those admitted to a burn center survive their injuries. Burns occur at similar frequencies in men and women. The long-term outcome is related to the size of burn and the age of the person affected.
Signs and symptoms.
The characteristics of a burn depend upon its depth. Superficial burns cause pain lasting two or three days, followed by peeling of the skin over the next few days. Individuals suffering from more severe burns may indicate discomfort or complain of feeling pressure rather than pain. Full-thickness burns may be entirely insensitive to light touch or puncture. While superficial burns are typically red in color, severe burns may be pink, white or black. Burns around the mouth or singed hair inside the nose may indicate that burns to the airways have occurred, but these findings are not definitive. More worrisome signs include: shortness of breath, hoarseness, and stridor or wheezing. Itchiness is common during the healing process, occurring in up to 90% of adults and nearly all children. Numbness or tingling may persist for a prolonged period of time after an electrical injury. Burns may also produce emotional and psychological distress., Orthopedic surgery or orthopedics (alternatively spelled orthopaedic surgery and orthopaedics) is the branch of surgery concerned with conditions involving the musculoskeletal system. Orthopedic surgeons use both surgical and nonsurgical means to treat musculoskeletal trauma, spine diseases, sports injuries, degenerative diseases, infections, tumors, and congenital disorders.
Etymology.
Nicholas Andry coined the word ""orthopædics"" in French as "orthopédie", derived from the Greek words  "orthos" ("correct", "straight") and  "paidion" ("child"), when he published "Orthopedie" (translated as "Orthopædia: or the Art of Correcting and Preventing Deformities in Children") in 1741. Though as the name implies it was initially developed with attention to children, the correction of spinal and bony deformities in all stages of life eventually became the cornerstone of orthopedic practice., Septic arthritis, also known as infectious arthritis or joint infection, is the purulent invasion of a joint by an infectious agent which produces arthritis. People with artificial joints are more at risk than the general population but have slightly different symptoms, are infected with different organisms and require different treatment. Septic arthritis is considered a medical emergency. If untreated, it may destroy the joint in a period of days. The infection may also spread to other parts of the body., Arthritis is a term often used to mean any disorder that affects joints. Symptoms generally include joint pain and stiffness. Other symptoms may include redness, warmth, swelling, and decreased range of motion of the affected joints. In some types other organs are also affected. Onset can be gradual or sudden.
There are over 100 types of arthritis. The most common forms are osteoarthritis (degenerative joint disease) and rheumatoid arthritis. Osteoarthritis usually occurs with age and affects the fingers, knees, and hips. Rheumatoid arthritis is an autoimmune disorder that often affects the hands and feet. Other types include gout, lupus, fibromyalgia, and septic arthritis. They are all types of rheumatic disease.
Treatment may include resting the joint and alternating between applying ice and heat. Weight loss and exercise may also be useful. Pain medications such as ibuprofen and paracetamol (acetaminophen) may be used. In some a joint replacement may be useful.
Osteoarthritis affects more than 3.8% of people while rheumatoid arthritis affects about 0.24% of people. Gout affects about 1 to 2% of the Western population at some point in their lives. In Australia about 15% of people are affected, while in the United States more than 20% of have a type of arthritis. Overall the disease becomes more common with age. Arthritis is a common reason that people miss work and can result in a decreased quality of life. The term is from Greek "arthro-" meaning joint and "-itis" meaning inflammation., A bone is a rigid organ that constitutes part of the vertebrate skeleton. Bones support and protect the various organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, and enable mobility. Bones come in a variety of shapes and sizes and have a complex internal and external structure. They are lightweight yet strong and hard, and serve multiple functions. , Pain is a distressing feeling often caused by intense or damaging stimuli, such as stubbing a toe, burning a finger, putting alcohol on a cut, or bumping the "funny bone". Because it is a complex, subjective phenomenon, defining pain has been a challenge. The International Association for the Study of Pain's widely used definition states: "Pain is an unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage." In medical diagnosis, pain is regarded as a symptom of an underlying condition., A disease is a particular abnormal condition, a disorder of a structure or function, that affects part or all of an organism. The study of disease is called pathology which includes the causal study of etiology. Disease is often construed as a medical condition associated with specific symptoms and signs. It may be caused by external factors such as pathogens, or it may be caused by internal dysfunctions particularly of the immune system such as an immunodeficiency, or a hypersensitivity including allergies and autoimmunity., Replacement arthroplasty (from Greek "arthron", joint, limb, articulate, + "plassein", to form, mould, forge, feign, make an image of), or joint replacement surgery, is a procedure of orthopedic surgery in which an arthritic or dysfunctional joint surface is replaced with an orthopedic prosthesis. Joint replacement is considered as a treatment when severe joint pain or dysfunction is not alleviated by less-invasive therapies. During the latter half of the 20th century, rheumasurgery developed as a subspecialty focused on these and a few other procedures in patients with rheumatic diseases., White blood cells (WBCs), also called leukocytes or leucocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders. All white blood cells are produced and derived from multipotent cells in the bone marrow known as hematopoietic stem cells. Leukocytes are found throughout the body, including the blood and lymphatic system., Osteoarthritis ( OA ) is a type of joint disease that results from breakdown of joint cartilage and underlying bone . The most common symptoms are joint pain and stiffness . Initially , symptoms may occur only following exercise , but over time may become constant . Other symptoms may include joint swelling , decreased range of motion , and when the back is affected weakness or numbness of the arms and legs . The most commonly involved joints are those near the ends of the fingers , at the base of the thumb , neck , lower back , knees , and hips . Joints on one side of the body are often more affected than those on the other . Usually the problems come on over years . It can affect work and normal daily activities . Unlike other types of arthritis , only the joints are typically affected . Causes include previous joint injury , abnormal joint or limb development , and inherited factors . Risk is greater in those who are overweight , have one leg of a different length , and have jobs that result in high levels of joint stress . Osteoarthritis is believed to be caused by mechanical stress on the joint and low grade inflammatory processes . It develops as cartilage is lost with eventually the underlying bone becoming affected . As pain may make it difficult to exercise , muscle loss may occur . Diagnosis is typically based on signs and symptoms with medical imaging and other tests occasionally used to either support or rule out other problems . Unlike in rheumatoid arthritis , which is primarily an inflammatory condition , the joints do not typically become hot or red . Treatment includes exercise , efforts to decrease joint stress , support groups , and pain medications . Efforts to decrease joint stress include resting and the use of a cane . Weight loss may help in those who are overweight . Pain medications may include paracetamol ( acetaminophen ) . If this does not work NSAIDs such as naproxen may be used , but these medications are associated with greater side effects . Opioids if used are generally only recommended short term due to the risk of addiction . If pain interferes with normal life despite other treatments , joint replacement surgery may help . An artificial joint , however , only lasts a limited amount of time . Outcomes for most people with osteoarthritis are good . OA is the most common form of arthritis with disease of the knee and hip affecting about 3.8 % of people as of 2010 . Among those over 60 years old about 10 % of males and 18 % of females are affected . It is the cause of about 2 % of years lived with disability . In Australia about 1.9 million people are affected , and in the United States about 27 million people are affected . Before 45 years of age it is more common in men , while after 45 years of age it is more common in women . It becomes more common in both sexes as people become older ., Pathology (from the Greek roots of "pathos", meaning "experience" or "suffering", and "-logia", "study of") is a significant component of the causal study of disease and a major field in modern medicine and diagnosis., Medical imaging is the technique and process of creating visual representations of the interior of a body for clinical analysis and medical intervention, as well as visual representation of the function of some organs or tissues (physiology). Medical imaging seeks to reveal internal structures hidden by the skin and bones, as well as to diagnose and treat disease. Medical imaging also establishes a database of normal anatomy and physiology to make it possible to identify abnormalities. Although imaging of removed organs and tissues can be performed for medical reasons, such procedures are usually considered part of pathology instead of medical imaging., Subject: osteoarthritis, Relation: medical_specialty, Options: (A) infection (B) infectious disease (C) orthopedics (D) pathology (E) rheumatology (F) surgery
[A]: rheumatology


[Q]: Context: The Undertones are a punk rock/new wave band formed in Derry, Northern Ireland, in 1974. From 1975 to 1983, the Undertones consisted of Feargal Sharkey (vocals), John O'Neill (rhythm guitar, vocals), Damian O'Neill (lead guitar, vocals), Michael Bradley (bass, vocals) and Billy Doherty (drums). Much of the earlier Undertones material drew influence from punk rock and new wave; the Undertones also incorporated elements of rock, glam rock and post-punk into material released after 1979, before citing soul and Motown as the influence for the material released upon their final album. The Undertones released thirteen singles and four studio albums between 1978 and 1983 before Sharkey announced his intention to leave the band in May 1983, citing musical differences as the reason for the break up., McFly is an English pop rock band formed in London in 2003. The band consists of Tom Fletcher (lead vocals, ukulele, guitar and piano), Danny Jones (lead vocals, harmonica and guitar), Dougie Poynter (bass guitar and vocals), and Harry Judd (drums). They were signed to Island Records from their 2004 launch until December 2007, before creating their own label, Super Records., `` Who 's David '' is a song by British pop rock band Busted . It was released on 16 February 2004 as the second single from their second studio album , A Present for Everyone . It was written co-written by Tom Fletcher , one of the lead vocalists and guitarists from the band McFly . The single features the live version of `` Teenage Kicks '' , which the band performed at the 2004 Brit Awards ceremony . In response to being frequently asked `` who is David ? '' , Willis claimed that David is the name of his facial mole . The song was written about experiences with a girl who is unfaithful . The single peaked at number one on the UK Singles Chart , becoming the group 's third number - one single , and their second consecutive ., "Crashed the Wedding" is a song by English pop rock band Busted. It was written by James Bourne and McFly's Tom Fletcher and produced by Steve Power. It was released on 10 November 2003 through Island Records as the lead single from Busted's second studio album "A Present for Everyone" (2004), The 2004 Brit Awards were the 24th edition of the biggest annual pop music awards in the United Kingdom. They are run by the British Phonographic Industry and took place on 17 February 2004 at Earls Court in London. The awards were marked by a set of victories by the rock band The Darkness. They won the first rock act award ever presented at the BRIT Awards. The show, when broadcast, attracted 6.18 million viewers., Daniel Alan David "Danny" Jones (born 12 March 1986) is a British musician who is one of the lead vocalists and guitarists for pop-rock band McFly. Jones' fellow band members are Tom Fletcher (guitar and vocals), Dougie Poynter (bass and vocals), and Harry Judd (drums).
Jones is married to former Miss England, Georgia Horsley. They married in Georgia's home town Malton, North Yorkshire on August 2, 2014., Sire Records is an American record label, owned by Warner Music Group and distributed by Warner Bros. Records., London is the capital and most populous city of England and the United Kingdom, as well as the most populous city proper in the European Union. Standing on the River Thames in the south east of the island of Great Britain, London has been a major settlement for two millennia. It was founded by the Romans, who named it "Londinium". London's ancient core, the City of London, largely retains its medieval boundaries. Since at least the 19th century, "London" has also referred to the metropolis around this core, historically split between Middlesex, Essex, Surrey, Kent, and Hertfordshire, which today largely makes up Greater London, governed by the Mayor of London and the London Assembly., Punk rock (or simply "punk") is a rock music genre that developed in the early to mid 1970s in the United States, United Kingdom, and Australia. Rooted in 1960s garage rock and other forms of what is now known as "proto-punk" music, punk rock bands rejected perceived excesses of mainstream 1970s rock. Punk bands typically use short or fast-paced songs, with hard-edged melodies and singing styles, stripped-down instrumentation, and often political, anti-establishment lyrics. Punk embraces a DIY ethic; many bands self-produce recordings and distribute them through informal channels., A Present for Everyone is the second studio album by British pop punk band Busted. It was released on 17 November 2003 by Universal Island Records and features a sound mixing pop punk and power pop material with traditional pop rock. Five singles were released from the album, including the number-one hits "Crashed the Wedding", "Who's David" and "Thunderbirds / 3AM"., "Teenage Kicks" is the debut single by Northern Irish punk rock/new wave band The Undertones. Written in the summer of 1977 by the band's principal songwriter, John O'Neill, the song was recorded on 16 June 1978 and initially released that September upon independent Belfast record label Good Vibrations, before the bandat the time unobligated to any record labelsigned to Sire Records on 2 October 1978. Sire Records subsequently obtained all copyrights to the material released upon the Teenage Kicks EP and the song was re-released as a standard vinyl single upon Sire's own label on 14 October that year, reaching number 31 in the UK Singles Chart two weeks after its release, Thomas "Tom" Michael Fletcher (born 17 July 1985) is an English singer-songwriter, guitarist, children's author and YouTube vlogger. Among his accomplishments, he is one of the lead vocalists and guitarists of English pop rock band McFly, in addition to being the group's founder and principal songwriter. He originally auditioned and was accepted into the band Busted before losing out on the place to Charlie Simpson after the record label Island decided the band should be a trio rather than a four-piece. However, he still carried on writing with the band. In his thirteen-year career as a professional songwriter, Fletcher has penned ten UK number one singles and twenty-one top ten singles. He is credited as having written songs for bands including One Direction, Busted, The Vamps and 5 Seconds of Summer., Pop rock is rock music with a lighter, smoother approach that is more reminiscent of commercial pop music. Originating in the 1950s as an alternative to rock and roll, early pop rock was influenced by the beat, arrangements, and style of rock and roll (and sometimes doo wop), but placed a greater emphasis on professional songwriting and recording craft. The detractors of pop rock often deride it as a slick, commercial product, less authentic than rock music., "Thunderbirds / 3AM" (titled "Thunderbirds Are Go" on some editions of the single and album) is a double A-side single by English pop rock band Busted. It was released on 26 July 2004 as the fourth single from their second studio album, "A Present for Everyone" (2003). "Thunderbirds" was not originally included on the album, having been written specifically for the 2004 film "Thunderbirds", although it later appeared on a re-issue of the album in Europe. "Thunderbirds" was not released on an album in the United Kingdom until the release of the group's live album "" in 2005., The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a sovereign country in western Europe. Lying off the north-western coast of the European mainland, it includes the island of Great Britain (the name of which is also loosely applied to the whole country), the north-eastern part of the island of Ireland, and many smaller islands. Northern Ireland is the only part of the UK that shares a land border with another sovereign statethe Republic of Ireland. Apart from this land border, the UK is surrounded by the Atlantic Ocean, with the North Sea to its east, the English Channel to its south and the Celtic Sea to its south-south-west, giving it the 12th-longest coastline in the world. The Irish Sea lies between Great Britain and Ireland. With an area of , the UK is the 78th-largest sovereign state in the world and the 11th-largest in Europe. It is also the 21st-most populous country, with an estimated 65.1 million inhabitants. Together, this makes it the fourth most densely populated country in the European Union., Belfast is the capital and largest city of Northern Ireland, the second largest on the island of Ireland, and the heart of the tenth largest Primary Urban Area in the United Kingdom. On the River Lagan, it had a population of 286,000 at the 2011 census and 333,871 after the 2015 council reform. Belfast was granted city status in 1888., Pop punk (also known as punk-pop) is a punk rock music genre and a fusion genre that combines elements of punk rock with elements of pop music. Pop punk typically combines fast punk rock tempos, power chord changes and loud, distorted electric guitars with pop-influenced melodies and lyrical themes., The Brit Awards (sometimes stylised as the BRIT Awards; often simply called the Brits) are the British Phonographic Industry's annual pop music awards. The name was originally a shortened form of "British", "Britain" or "Britannia" (in the early days the awards were sponsored by Britannia Music Club), but subsequently became a backronym for British Record Industry Trusts Show. In addition, an equivalent awards ceremony for classical music, called the Classic Brit Awards, is held each May. Robbie Williams holds the record for the most Brit Awards, 13 as a solo artist and another five as part of Take That. , Power pop is a popular musical genre that draws its inspiration from 1960s British and American rock music. It typically incorporates a combination of musical devices such as strong melodies, clear vocals and crisp vocal harmonies, economical arrangements and prominent guitar riffs. Instrumental solos are usually kept to a minimum, and blues elements are largely downplayed., Pop music is a genre of popular music that originated in its modern form in the Western world as a softer alternative to rock and roll. The terms "popular music" and "pop music" are often used interchangeably, although the former describes all music that is popular and includes many styles. "Pop" and "rock" were synonymous terms until the late 1960s, when they were increasingly used in opposition from each other., Island Records is a Jamaican-English record label that operates as a division of the Universal Music Group (UMG). It was founded by Chris Blackwell, Graeme Goodall and Leslie Kong in Jamaica in 1959. Blackwell sold the label to PolyGram in 1989. Both Island and another label recently acquired byPolyGram, A&M Records, were both at the time the largest independent record labels in history, with Island in particular having exerted a major influence on the progressive UK music scene in the early 1970s. , Dougie Lee Poynter (born 30 November 1987) is an English musician, songwriter, fashion model, clothing designer, author, actor and philanthropist. He is the bassist and youngest member of the pop rock band McFly. , Super Records Ltd. is an independent label owned and operated by English band McFly., Charles Robert "Charlie" Simpson (born 7 June 1985) is an English singer, songwriter and musician. He is the youngest member of multi-BRIT Award-winning band Busted, and is the lead vocalist, guitarist in alternative rock band Fightstar. AllMusic has noted that Simpson is "perhaps the only pop star to make the convincing transition from fresh-faced boy bander to authentic hard rock frontman". Simpson is a multi-instrumentalist, playing guitar, keyboard, piano and drums. , Harry Mark Christopher Judd (born 23 December 1985) is an English musician who is best known as the drummer for British pop rock band McFly, along with fellow band members Tom Fletcher, Dougie Poynter and Danny Jones. Judd won the 2011 series of "Strictly Come Dancing"., Subject: who's david, Relation: record_label, Options: (A) album (B) english (C) island (D) label (E) labels (F) loud (G) motown (H) polygram (I) pop (J) record (K) rock music (L) sire (M) sire records (N) super records (O) united kingdom (P) universal (Q) universal music group (R) warner bros . (S) warner music group
[A]: universal music group


[Q]: Context: Chimaeras are cartilaginous fishes in the order Chimaeriformes, known informally as ghost sharks, rat fish (not to be confused with the rattails), spookfish (not to be confused with the true spookfish of the family Opisthoproctidae), or rabbit fish (not to be confused with the true rabbitfishes of the family Siganidae)., In cryptography, SHARK is a block cipher identified as one of the predecessors of Rijndael (the Advanced Encryption Standard)., A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment., Sawfishes, also known as carpenter sharks, are a family of rays characterized by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged so as to resemble a saw. Several species of sawfishes can grow to about . The family as a whole is largely unknown and little studied. The Pristidae are the only living family within the order Pristiformes, whose name comes from the ., A clade (from , "klados", "branch") is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life"., Neoselachii are a grouping of cartilaginous fishes in subclass Elasmobranchii of class Chondrichthyes . It contains all living ( extant ) sharks , skates , and rays ., Chondrichthyes (from Greek - "chondr-" 'cartilage',  "ichthys" 'fish') is a class that contains the cartilaginous fishes: they are jawed vertebrates with paired fins, paired nares, scales, a heart with its chambers in series, and skeletons made of cartilage rather than bone. The class is divided into two subclasses: Elasmobranchii (sharks, rays, skates, and sawfish) and Holocephali (chimaeras, sometimes called ghost sharks, which are sometimes separated into their own class)., A dorsal fin is a fin located on the backs of various unrelated marine and freshwater vertebrates, including most fish, cetaceans (whales, dolphins, and porpoises), and the (extinct) ichthyosaurs. Depending on the species, an animal may have one or two of them. , Elasmobranchii is a subclass of Chondrichthyes or cartilaginous fish. Members of this subclass are characterised by having five to seven pairs of gill clefts opening individually to the exterior, rigid dorsal fins and small placoid scales on the skin. The teeth are in several series; the upper jaw is not fused to the cranium, and the lower jaw is articulated with the upper. The details of this jaw anatomy vary between species, and help distinguish the different elasmobranch clades. The pelvic fins in males are modified to create claspers for the transfer of sperm. There is no swim bladder, instead these fish maintain buoyancy with large livers rich in oil., The subclass Holocephali ("complete heads") is a taxon of cartilaginous fish in the class Chondrichthyes. The earliest fossils are of teeth and come from the Devonian period. Little is known about these primitive forms, and the only surviving group in the subclass is the order Chimaeriformes. This group includes the rat fishes in the genus "Chimaera", and the elephant fishes in the genus "Callorhynchus". These fishes move by using sweeping movements of their large pectoral fins. They have long slender tails and live close to the seabed feeding on benthic invertebrates. They lack a stomach, food moving directly into the intestine., Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones). Vertebrates represent the overwhelming majority of the phylum Chordata, with currently about 64,000 species described. Vertebrates include the jawless fish and the jawed vertebrates, which include the cartilaginous fish (sharks and rays) and the bony fish. , The swim bladder, gas bladder, fish maw or air bladder is an internal gas-filled organ that contributes to the ability of many bony fish (but not cartilaginous fish) to control their buoyancy, and thus to stay at their current water depth without having to waste energy in swimming. Also, the dorsal position of the swim bladder means the center of mass is below the center of volume, allowing it to act as a stabilizing agent. Additionally, the swim bladder functions as a resonating chamber, to produce or receive sound., In biology, a clasper is a male anatomical structure found in some groups of animals, used in mating., Cartilage is a resilient and smooth elastic tissue, rubber-like padding that covers and protects the ends of long bones at the joints, and is a structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs, and many other body components. It is not as hard and rigid as bone, but it is stiffer and less flexible than muscle., Sperm is the male reproductive cell and is derived from the Greek word () "sperma" (meaning "seed"). In the types of sexual reproduction known as anisogamy and its subtype oogamy, there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. A uniflagellar sperm cell that is motile is referred to as a spermatozoon, whereas a non-motile sperm cell is referred to as a spermatium. Sperm cells cannot divide and have a limited life span, but after fusion with egg cells during fertilization, a new organism begins developing, starting as a totipotent zygote. The human sperm cell is haploid, so that its 23 chromosomes can join the 23 chromosomes of the female egg to form a diploid cell. In mammals, sperm develops in the testicles and is released from the penis. It is also possible to extract sperm through TESE. Some sperm banks hold up to of sperm., A bone is a rigid organ that constitutes part of the vertebrate skeleton. Bones support and protect the various organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, and enable mobility. Bones come in a variety of shapes and sizes and have a complex internal and external structure. They are lightweight yet strong and hard, and serve multiple functions. , Subject: neoselachii, Relation: instance_of, Options: (A) area (B) biology (C) block cipher (D) bone (E) cage (F) cell (G) cipher (H) clade (I) class (J) cryptography (K) elephant (L) environment (M) extension (N) family (O) fish (P) five (Q) food (R) gas (S) ghost (T) limited (U) mass (V) may (W) muscle (X) oil (Y) opening (Z) order ([) organ (\) organism (]) part (^) period (_) rat (`) reproduction (a) saw (b) seed (c) size (d) skeleton (e) sound (f) species (g) store (h) subtype (i) swimming (j) taxon (k) tissue (l) tree of life (m) two (n) variety (o) water (p) word
[A]:
clade