Problem: Information:  - E. I. du Pont de Nemours and Company, commonly referred to as DuPont, is an American conglomerate that was founded in July 1802 as a gunpowder mill by French-American chemist and industrialist Éleuthère Irénée du Pont.  - String instruments, stringed instruments, or chordophones are musical instruments that produce sound from vibrating strings when the performer plays or sounds the strings in some manner.   - An amide (or or ), also known as an acid amide, is a compound with the functional group RE(O)NR (R and R refer to H or organic groups). Most common are carboxamides (organic amides) ("n" = 1, E = C, "x" = 1), but many other important types of amides are known, including phosphoramides ("n" = 2, E = P, "x" = 1 and many related formulas) and sulfonamides (E = S, "x" = 2). The term amide refers both to "classes of compounds" and to the "functional group" (RE(O)NR) within those compounds.  - The DuPont Experimental Station is the largest research and development facility of E. I. du Pont de Nemours and Company. Located on the banks of the Brandywine Creek in Wilmington, Delaware, it is home to some of the most important discoveries of the modern chemical industry. The Experimental Station is a more recent part of the DuPont legacy and is located on the DuPont Historic Corridor.  - Nylon is a generic designation for a family of synthetic polymers, more specifically aliphatic or semi-aromatic polyamides. They can be melt-processed into fibers, films or shapes. The first example of nylon (nylon 6,6) was produced on February 28, 1935, by Wallace Carothers at DuPont's research facility at the DuPont Experimental Station. Nylon polymers have found significant commercial applications in fibers (apparel, flooring and rubber reinforcement), in shapes (molded parts for cars, electrical equipment, etc.), and in films (mostly for food packaging).<ref name="Materials/Polyamide"></ref>  - HornbostelSachs or SachsHornbostel is a system of musical instrument classification devised by Erich Moritz von Hornbostel and Curt Sachs, and first published in the "Zeitschrift für Ethnologie" in 1914. An English translation was published in the "Galpin Society Journal" in 1961. It is the most widely used system for classifying musical instruments by ethnomusicologists and organologists (people who study musical instruments). The system was updated in 2011 as part of the work of the Musical Instrument Museums Online (MIMO) Project.  - A polyamide is a macromolecule with repeating units linked by amide bonds.  - The ukulele ( / jukleli / ew - k - LAY - lee , from Hawaiian : ukulele ( ukull ) ( oo - koo - leh - leh ) ; variant : ukelele ) sometimes abbreviated to uke , is a member of the lute family of instruments ; it generally employs four nylon or gut strings or four courses of strings . The ukulele originated in the 19th century as a Hawaiian adaptation of the Portuguese machete , a small guitar - like instrument , which was introduced to Hawaii by Portuguese immigrants , many from Madeira and the Azores . It gained great popularity elsewhere in the United States during the early 20th century , and from there spread internationally . The tone and volume of the instrument vary with size and construction . Ukuleles commonly come in four sizes : soprano , concert , tenor , and baritone .  - Wallace Hume Carothers (April 27, 1896  April 29, 1937) was an American chemist, inventor and the leader of organic chemistry at DuPont, credited with the invention of nylon.  - A fret is a raised element on the neck of a stringed instrument. Frets usually extend across the full width of the neck. On most modern western fretted instruments, frets are metal strips inserted into the fingerboard. On some historical instruments and non-European instruments, frets are made of pieces of string tied around the neck.   - Lute can refer generally to any string instrument having the strings running in a plane parallel to the sound table (in the HornbostelSachs system), more specifically to any plucked string instrument with a neck (either fretted or unfretted) and a deep round back, or more specifically to an instrument from the family of European lutes.    Given the information, choose the subject and object entities that have the relation of 'subclass of'.

A: ukulele , plucked string instrument


Problem: Information:  - Fueled by Ramen LLC is an American record label owned by Warner Music Group with distribution from one of the company's main labels, Atlantic Records. The label, founded in Gainesville, Florida, is now based in New York City.  - `` Checkmarks '' is a song by Chicago indie rock band The Academy Is ... , their first single altogether and first released off Almost Here . This song was also featured on the Warped Tour Compilation 2005 . The song was composed by William Beckett and Mike Carden .  - Fast Times at Barrington High is the third and final studio album by American rock band The Academy Is..., released in August 2008.  - The Academy Is... was an American rock band from Chicago, Illinois, formed in 2003. Before disbanding, they were signed by the Decaydance imprint of the Fueled by Ramen label. They were originally known as "The Academy", but added the "Is..." in 2004 to avoid legal complications with other established bands already under that name. The band released three studio albums, "Almost Here", "Santi", and "Fast Times at Barrington High", and four EPs. The band announced its break-up on 8 October 2011. In May 2015, lead singer William Beckett announced that the band would reunite at Riot Fest 2015 in Chicago. In addition the core members of the band Beckett, Mike Carden and Adam Siska, as well as Andy Mrotek and Ian Crawford (both of whom had not originally been part of the band), reunited for a farewell tour that took place during December 2015.    Given the information, choose the subject and object entities that have the relation of 'record label'.

A:
checkmarks , fueled by ramen