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).

Context: Cheese is a food derived from milk that is produced in a wide range of flavors, textures, and forms by coagulation of the milk protein casein. It comprises proteins and fat from milk, usually the milk of cows, buffalo, goats, or sheep. During production, the milk is usually acidified, and adding the enzyme rennet causes coagulation. The solids are separated and pressed into final form. Some cheeses have molds on the rind or throughout. Most cheeses melt at cooking temperature., Milk is a pale liquid produced by the mammary glands of mammals. It is the primary source of nutrition for infant mammals (including humans who breastfeed) before they are able to digest other types of food. Early-lactation milk contains colostrum, which carries the mother's antibodies to its young and can reduce the risk of many diseases. It contains many other nutrients including protein and lactose., Rennet is a complex of enzymes produced in the stomachs of ruminant mammals. Chymosin, its key component, is a protease enzyme that curdles the casein in milk. This helps young mammals digest their mothers' milk. Rennet can also be used to separate milk into solid curds for cheesemaking and liquid whey. In addition to chymosin, rennet contains other important enzymes such as pepsin and a lipase., The domestic goat ("Capra aegagrus hircus") is a subspecies of goat domesticated from the wild goat of southwest Asia and Eastern Europe., In computer science, ACID ("Atomicity, Consistency, Isolation, Durability") is a set of properties of database transactions. In the context of databases, a single logical operation on the data is called a transaction. For example, a transfer of funds from one bank account to another, even involving multiple changes such as debiting one account and crediting another, is a single transaction., The sheep ("Ovis aries") is a quadrupedal, ruminant mammal typically kept as livestock. Like all ruminants, sheep are members of the order Artiodactyla, the even-toed ungulates. Although the name "sheep" applies to many species in the genus "Ovis", in everyday usage it almost always refers to "Ovis aries". Numbering a little over one billion, domestic sheep are also the most numerous species of sheep. An adult female sheep is referred to as a "ewe", an intact male as a "ram" or occasionally a "tup", a castrated male as a "wether", and a younger sheep as a "lamb"., A grater ( also known as a shredder ) is a kitchen utensil used to grate foods into fine pieces . It was invented by François Boullier in the 1540s , originally to grate cheese ., Proteins (or ) are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, responding to stimuli, and transporting molecules from one location to another. Proteins differ from one another primarily in their sequence of amino acids, which is dictated by the nucleotide sequence of their genes, and which usually results in protein folding into a specific three-dimensional structure that determines its activity., A kitchen utensil is a hand-held, typically small tool or utensil that is used in the kitchen, for food-related functions. A cooking utensil is a utensil used in the kitchen for cooking. Other names for the same thing, or subsets thereof, derive from the word "ware", and describe kitchen utensils from a merchandising (and functional) point of view: kitchenware, wares for the kitchen; ovenware and bakeware, kitchen utensils that are for use inside ovens and for baking; cookware, merchandise used for cooking; and so forth., Fat is one of the three main macronutrients, along with carbohydrate and protein. Fats, also known as triglycerides, are esters of three fatty acid chains and the alcohol glycerol., Enzymes are macromolecular biological catalysts. Enzymes accelerate, or catalyze, chemical reactions. The molecules at the beginning of the process upon which enzymes may act are called substrates and the enzyme converts these into different molecules, called products. Almost all metabolic processes in the cell need enzymes in order to occur at rates fast enough to sustain life. The set of enzymes made in a cell determines which metabolic pathways occur in that cell. The study of enzymes is called "enzymology"., Casein (or , from Latin "caseus", "cheese") is the name for a family of related phosphoproteins (S1, S2, , ). These proteins are commonly found in mammalian milk, making up 80% of the proteins in cow's milk and between 20% and 45% of the proteins in human milk.
Casein has a wide variety of uses, from being a major component of cheese, to use as a food additive, to a binder for safety matches. As a food source, casein supplies amino acids, carbohydrates, and the two inorganic elements calcium and phosphorus., A tool is any physical item that can be used to achieve a goal, especially if the item is not consumed in the process. Tool use by humans dates back millions of years, and other animals are also known to employ simple tools., A mold (US) or mould is a fungus that grows in the form of multicellular filaments called "hyphae". In contrast, fungi that can adopt a single-celled growth habit are called yeasts., Subject: grater, Relation: subclass_of, Options: (A) alcohol (B) amino acid (C) being (D) calcium (E) carbohydrate (F) cheese (G) coagulation (H) computer (I) cooking (J) dna (K) fat (L) female (M) food (N) goat (O) growth (P) habit (Q) human (R) key (S) kitchen utensil (T) latin (U) liquid (V) location (W) milk (X) mold (Y) name (Z) order ([) ovis aries (\) pale (]) pathways (^) process (_) protein (`) rates (a) science (b) sequence (c) set (d) single (e) solid (f) species (g) study (h) temperature (i) tool (j) transfer (k) variety (l) word
tool

Context: The Christian Liberation Movement (or simply MCL) is a Cuban dissident party advocating political change in Cuba. MCL was founded in 1988 by a group of secular Catholics belonging to the Parish of Cerro, in Havana. From the movement's founding and until his death, it was led by Oswaldo Payá. At present (2014), it is led by Ofelia Acevedo. Its bank account for financial support (through donations and funding) is based in San Juan, Puerto Rico - although the movement itself works in Cuba., Leonel Grave de Peralta ( born May 30 , 1976 ) is a Cuban activist and dissident . He was an active member of the Christian Liberation Movement , Varela Project , and Director of the Independent Bartolomé Massó Library . He was one of the approximately 75 dissidents arrested , tried , and convicted in 2003 as part of the Cuban government 's Black Spring ., Puerto Rico, (Spanish for "Rich Port") officially the Commonwealth of Puerto Rico ("Free Associated State of Puerto Rico") and briefly called Porto Rico, is an unincorporated territory of the United States located in the northeast Caribbean Sea., Havana (Spanish: "La Habana") is the capital city, largest city, province, major port, and leading commercial centre of Cuba. The city proper has a population of 2.1 million inhabitants, and it spans a total of  making it the largest city by area, the most populous city, and the third largest metropolitan area in the Caribbean region. The city extends mostly westward and southward from the bay, which is entered through a narrow inlet and which divides into three main harbours: Marimelena, Guanabacoa and Atarés. The sluggish Almendares River traverses the city from south to north, entering the Straits of Florida a few miles west of the bay., Cuba, officially the Republic of Cuba, is a country comprising the island of Cuba as well as Isla de la Juventud and several minor archipelagos. Cuba is located in the northern Caribbean where the Caribbean Sea, the Gulf of Mexico, and the Atlantic Ocean meet. It is south of both the U.S. state of Florida and the Bahamas, west of Haiti, and north of Jamaica. Havana is the largest city and capital; other major cities include Santiago de Cuba and Camagüey. Cuba is the largest island in the Caribbean, with an area of , and the second-most populous after Hispaniola, with over 11 million inhabitants., The Varela Project ("Proyecto Varela" in Spanish) is a project that was started in 1998 by Oswaldo Payá of the Christian Liberation Movement (CLM) and named after Felix Varela, a Cuban religious leader., Oswaldo Payá Sardiñas (29 February 1952  22 July 2012) was a Cuban political activist. A Roman Catholic, he founded the Christian Liberation Movement in 1987 to oppose the one-party rule of the Cuban Communist Party. He attracted international attention for organizing a petition drive known as the Varela Project, in which 25,000 signatories petitioned the Cuban government to guarantee freedom of speech and freedom of assembly as well as to institute a multi-party democracy. In recognition of his work, he received the European Parliament's Sakharov Prize and People in Need's Homo Homini Award., Subject: leonel grave de peralta, Relation: place_of_birth, Options: (A) atlantic ocean (B) camagüey (C) cuba (D) florida (E) haiti (F) havana (G) isla de la juventud (H) island (I) jamaica (J) most (K) of (L) parish (M) puerto rico (N) republic (O) roman (P) santiago de cuba
santiago de cuba

Context: Sadiq Aman Khan (born 8 October 1970) is a British politician and the current Mayor of London since May 2016. He was the Member of Parliament (MP) for Tooting from 2005 to 2016. A member of the Labour Party, he is situated on the party's soft left and has been ideologically characterised as a social democrat., The 2004 election to the post of Mayor of London took place on 10 June 2004 . It was held on the same day as other local elections and the UK part of the 2004 European Parliament elections . The election was won by incumbent mayor , Ken Livingston , who stood as a candidate for the Labour Party and once again soundly defeated Steven Norris , the Conservative Party candidate ., Kenneth Robert "Ken" Livingstone (born 17 June 1945) is an English politician who served as the Leader of the Greater London Council (GLC) from 1981 until the council was abolished in 1986, and as Mayor of London from the creation of the office in 2000 until 2008. He also served as the Member of Parliament (MP) for Brent East from 1987 to 2001. A suspended member of the Labour Party, he was on the party's hard left, ideologically identifying as a democratic socialist., Alexander Boris de Pfeffel Johnson (born 19 June 1964), known as Boris Johnson, is a British politician, popular historian, author, and journalist. He has been UK Secretary of State for Foreign and Commonwealth Affairs since July 2016 and a Member of Parliament (MP) for the Uxbridge and South Ruislip constituency since May 2015. He had previously been an MP for the Henley constituency from 2001 to 2008 and was later Mayor of London from 2008 to 2016. A member of the Conservative Party, Johnson identifies as a "one-nation conservative" and has been associated with both economically and socially liberal policies.
Born in New York City to wealthy upper-middle class English parents, Johnson was educated at the European School of Brussels, Ashdown House School, and Eton College. He studied Classics at Balliol College, Oxford, where he was elected president of the Oxford Union in 1986. Beginning his career in journalism at "The Times" before being sacked for inventing a quote, he later became "The Daily Telegraph"s Brussels correspondent, with his articles exerting a strong influence on growing Eurosceptic sentiment among the British right-wing. He was assistant editor from 1994 to 1999 before taking the editorship of "The Spectator" from 1999 to 2005. Joining the Conservatives, he was elected MP for Henley in 2001, and under Michael Howard and David Cameron he was in the Shadow Cabinet. Mostly adhering to the Conservatives' party line, he nevertheless adopted a more socially liberal stance on issues like LGBT rights in parliamentary votes. Making regular television appearances, writing books, and remaining active in journalism, Johnson became one of the most conspicuous politicians in Britain.
Selected as Conservative candidate for the London mayoral election of 2008, Johnson defeated Labour incumbent Ken Livingstone and resigned his seat in parliament. During his first term as mayor, he banned alcohol consumption on public transport, championed London's financial sector, and introduced the New Routemaster buses, cycle hire scheme, and Thames cable-car. In 2012, he was re-elected mayor, again defeating Livingstone; during his second term he oversaw the 2012 Summer Olympics. In 2015 he was elected MP for Uxbridge and South Ruislip, stepping down as mayor the following year. In 2016, Johnson became a prominent figure in the successful Vote Leave campaign to withdraw the United Kingdom from the European Union.
Johnson is a controversial figure in British politics and journalism. Supporters have praised him as an entertaining, humorous, and popular figure with appeal beyond traditional Conservative voters. Conversely, he has been criticised by figures on both the left and right, accused of elitism, cronyism and laziness, and using racist language. Johnson is the subject of several biographies and a number of fictionalised portrayals., The Mayor of London is an elected politician who, along with the London Assembly of 25 members, is accountable for the strategic government of Greater London. The current mayor is Sadiq Khan, who took up office on 9 May 2016. The position had been held by Ken Livingstone from the creation of the role on 4 May 2000 until he was defeated in 2008 by Boris Johnson, who served two terms before being succeeded by Khan., The London Assembly is an elected body, part of the Greater London Authority, that scrutinises the activities of the Mayor of London and has the power, with a two-thirds majority, to amend the Mayor's annual budget and to reject the Mayor's draft statutory strategies. The assembly was established in 2000 and meets at City Hall on the South Bank of the River Thames, close to Tower Bridge. The assembly is also able to investigate other issues of importance to Londoners (transport, environmental matters, etc.), publish its findings and recommendations, and make proposals to the Mayor., Subject: london mayoral election, Relation: instance_of, Options: (A) 25 (B) assembly (C) bridge (D) budget (E) city (F) class (G) college (H) council (I) election (J) government (K) house (L) june (M) language (N) line (O) may (P) mayor (Q) mayoral election (R) member (S) october (T) office (U) parliament (V) part (W) politician (X) position (Y) river (Z) role ([) secretary of state (\) sector (]) sentiment (^) stance (_) state (`) union (a) wing (b) writing
mayoral election