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: A songwriter is an individual who writes the lyrics, melodies and chord progressions for songs, typically for a popular music genre such as rock or country music. A songwriter can also be called a composer, although the latter term tends to be used mainly for individuals from the classical music genre. The pressure from the music industry to produce popular hits means that songwriting is often an activity for which the tasks are distributed between a number of people. For example, a songwriter who excels at writing lyrics might be paired with a songwriter with a gift for creating original melodies. Pop songs may be written by group members from the band or by staff writers  songwriters directly employed by music publishers. Some songwriters serve as their own music publishers, while others have outside publishers., A multi-instrumentalist is a musician who plays two or more musical instruments at a professional level. Multi-instrumentalists who play closely related instruments, a practice known as doubling are common in orchestra (e.g., flute players who double on piccolo and percussion players, who play snare drum, cymbals, bass drum, etc.), in jazz (e.g., saxophone players who double on clarinet or flute; or double bass players who also play electric bass); in music theatre pit orchestras (e.g., reed players who are required to play numerous reed instruments); and in other areas of classical music (e.g., church piano players are often expected to play the church's pipe organ or Hammond organ as well). Popular music composers and songwriters are often multi-instrumentalists. In pop and rock, it is more common than in classical or jazz for performers to be multi-instrumentalists on instruments that are not from the same family: it is common for pop and rock musicians to play both guitar and keyboards. Many bluegrass musicians are multi-instrumentalists. Some musicians' unions or associations specify a higher rate of pay for musicians who double on two or more instruments for a performance or recording., Atlantic Recording Corporation (simply known as Atlantic Records) is an American record label founded in October 1947 by Ahmet Ertegün and Herb Abramson. Over its first 20 years of operation, Atlantic Records earned a reputation as one of the most important American recording labels, specializing in jazz, R&B and soul recordings by African-American musicians including Aretha Franklin, Ray Charles, Wilson Pickett, Sam and Dave, Ruth Brown and Otis Redding, a position greatly enhanced by its distribution deal with Stax Records. In 1967, Atlantic Records became a wholly owned subsidiary of Warner Bros.-Seven Arts, now the Warner Music Group, and expanded into rock and pop music with releases by bands such as Led Zeppelin and Yes., A pianist is an individual musician who plays the piano. Most forms of Western music can make use of the piano. Consequently, pianists have a wide variety of repertoire and styles to choose from, including traditionally classical music, Jazz, blues and all sorts of popular music, including rock music. Most pianists can, to a certain extent, play other keyboard-related instruments such as the synthesizer, harpsichord, celesta and the organ and keyboard. Perhaps the greatest pianist of all time was Franz Liszt, whose piano mastery was described by Anton Rubinstein: "In comparison with Liszt, all other pianists are children". , Funk is a music genre that originated in the mid- 1960s when African American musicians created a rhythmic, danceable new form of music through a mixture of soul music, jazz, and rhythm and blues (R&B). Funk de-emphasizes melody and chord progressions used in other related genres and brings a strong rhythmic groove of a bass line played by an electric bassist and a drum part played by a drummer to the foreground. Funk songs are often based on an extended vamp on a single chord, distinguishing them from R&B and soul songs, which are built on complex chord progressions. Funk uses the same richly-colored extended chords found in bebop jazz, such as minor chords with added sevenths and elevenths, or dominant seventh chords with altered ninths., Alternative hip hop (also known as alternative rap) is a subgenre of hip hop music that encompasses the wide range of styles of hip hop that have not become identified as mainstream. AllMusic defines it as follows: "Alternative rap refers to hip hop groups that tend not to conform to any of the traditional forms of rap, such as gangsta, bass, hardcore, pop, and party rap. Instead, they blur genres  drawing equally from funk and rock, as well as jazz, soul, reggae, country, electronic, and even folk.", Baduizm is the debut album by American R&B and neo soul singer-songwriter Erykah Badu, released on February 11, 1997 by Kedar Records. After leaving university in order to concentrate on music full-time, Badu then began touring with her cousin, Robert "Free" Bradford, where she recorded a 19-song demo, "Country Cousins", which attracted the attention of Kedar Massenburg. He set Badu up to record a duet with D'Angelo, "Your Precious Love," and eventually signed her to a record deal with Universal Records. Recording sessions for the album took place during January to October 1996 at Battery Studios in New York City, Sigma Sounds & Ivory Studios in Philadelphia, and Dallas Sound Lab in Dallas., Erykah Abi Wright (born Erica Abi Wright; February 26, 1971), better known by her stage name Erykah Badu, is an American singer-songwriter, record producer, disc jockey, activist, and actress. Badu's career began after opening a show for D'Angelo in 1994 in her hometown; record label executive Kedar Massenburg was highly impressed with her performance and signed her to Kedar Entertainment. Her first album, "Baduizm", was released on February 11, 1997. It spawned three singles: "On & On", "Next Lifetime" and "Otherside of the Game". The album was certified triple Platinum by the Recording Industry Association of America (RIAA).
Badu's first live album, "Live", was released on November 18, 1997 and was certified double Platinum by the RIAA., Neo soul is a genre of popular music. The term was coined by music industry entrepreneur Kedar Massenburg during the late 1990s to market and describe a style of music that emerged from soul and contemporary R&B. Heavily based in soul music, neo soul is distinguished by a less conventional sound than its contemporary R&B counterpart, with incorporated elements ranging from jazz, funk, and hip hop to pop, fusion, and African music. It has been noted by music writers for its traditional R&B influences, conscious-driven lyrics, and strong female presence., Roy Ayers (born September 10, 1940) is an American funk, soul, and jazz composer and vibraphone player. Ayers began his career as a post-bop jazz artist, releasing several albums with Atlantic Records, before his tenure at Polydor Records beginning in the 1970s, during which he helped pioneer jazz-funk. He is a key figure in the acid jazz movement, which is a mixture of jazz into hip-hop and funk, and has been dubbed by many as "The Godfather of Neo Soul". He is most well known for his signature compositions "Everybody Loves The Sunshine" and "Searchin", and is also famous for having more sampled hits by rappers than any other artist., William "Kedar" Massenburg is an American record producer and record label executive, who was the president of Motown Records from 1997 to 2004. Massenburg is best known for bringing Erykah Badu to fame. He trademarked the term "neo soul.", Mama's Gun is the second studio album by American neo soul singer Erykah Badu. It was recorded between 1999 and 2000 at Electric Lady Studios in New York and released on November 21, 2000, by Motown Records. A neo soul album, "Mama's Gun" incorporates funk, soul, and jazz styles. It has confessional lyrics by Badu, which cover themes of insecurity, social issues and personal relationships. The album has been viewed by critics as a female companion to neo soul artist D'Angelo's second album "Voodoo" (2000), which features a similar musical style and direction. Critics have also noted that while "Baduizm" contained its share of cryptic lyricism, "Mama's Gun" is much more direct in its approach, and places the artist in a subjective position more than its predecessor., Polydor is a British record label and company, that operates as part of Universal Music Group. It has a close relationship with Universal's Interscope Geffen A&M label, which distributes Polydor's releases in the United States. In turn, Polydor distributes Interscope releases in the United Kingdom. Polydor Records Ltd. was established in 1954 British subsidiary in London by German Deutsche Grammophon GmbH. It was renamed in 1972 to Polydor Ltd., The vibraphone (also known as the vibraharp or simply the vibes) is a musical instrument in the struck idiophone subfamily of the percussion family., Musical collective is a phrase used to describe a group of musicians who collaborate over time to perform, record or compose music., `` Cleva '' is the third and final single from American singer Erykah Badu 's second studio album , Mama 's Gun ( 2000 ) . It was produced by Badu , J Dilla , and James Poyser , a member of the Soulquarians and Badu 's own production team Frequency . The song peaked at number seventy - seven on the Hot R&B / Hip - Hop Songs chart . It includes Roy Ayers on vibraphone ., Jazz-funk is a subgenre of jazz music characterized by a strong back beat (groove), electrified sounds and an early prevalence of analog synthesizers. The integration of funk, soul, and R&B music and styles into jazz resulted in the creation of a genre whose spectrum is quite wide and ranges from strong jazz improvisation to soul, funk or disco with jazz arrangements, jazz riffs, and jazz solos, and sometimes soul vocals., Yasiin Bey (born Dante Terrell Smith; December 11, 1973), best known by his stage name Mos Def, is an American hip hop recording artist, actor and activist from Brooklyn, New York City, New York. Best known for his music, Mos Def embarked on his hip hop career in 1994, alongside his siblings in the short-lived rap group Urban Thermo Dynamics (UTD), after which he appeared on albums by Da Bush Babees and De La Soul. He subsequently formed the duo Black Star, alongside fellow Brooklyn-based rapper Talib Kweli, and released their eponymous debut album in 1998. He was featured on the roster of Rawkus Records and in 1999 released his solo debut, "Black on Both Sides". His debut was followed by "The New Danger" (2004), "True Magic" (2006) and "The Ecstatic" (2009). The editors at About.com listed him as the 14th greatest emcee of all time on their "50 greatest MC's of our time" list., The Recording Industry Association of America (RIAA) is a continental North and South American trade organization that represents the recording industry in the United States. Its members consist of record labels and distributors, which the RIAA says "create, manufacture and/or distribute approximately 85% of all legally sold recorded music in the United States." The RIAA headquarters is in Washington, D.C., James Poyser (born 30 January 1967) is an English-born American multi-instrumentalist, songwriter, pianist, producer and a member of the hip hop band The Roots., The Soulquarians were a neo soul and alternative hip hop-informed musical collective. The collective, formed during the late 1990s, continued into the early 2000s, and produced several well-received albums. Prior to its formation, members Common, Talib Kweli, Mos Def, and Q-Tip were members of the Native Tongues Posse., Michael Eugene Archer (born February 11, 1974), better known by his stage name D'Angelo (pronounced "dee"-Angelo), is an American, Grammy Award winning R&B and Neo soul singer, songwriter, multi-instrumentalist and record producer. Born in Richmond, Virginia, the son of a Pentecostal minister, he began teaching himself piano as a very young child, and at age 18 he won the amateur talent competition at Harlem's Apollo Theater three weeks in a row. After briefly being a member of a hip-hop group called I.D.U., his first major success came in 1994 as the co-writer and co-producer of "U Will Know"., Subject: cleva, Relation: record_label, Options: (A) 1996 (B) album (C) apollo (D) atlantic records (E) country music (F) deutsche grammophon (G) english (H) funk (I) kedar massenburg (J) kedar records (K) label (L) labels (M) motown (N) pop (O) rawkus records (P) record (Q) record label (R) rock music (S) united kingdom (T) universal (U) universal music group (V) vibraphone (W) warner music group
motown

Context: Covent Garden (or ) is a district in London on the eastern fringes of the West End, between St Martin's Lane and Drury Lane. It is associated with the former fruit-and-vegetable market in the central square, now a popular shopping and tourist site, and with the Royal Opera House, which is also known as "Covent Garden". The district is divided by the main thoroughfare of Long Acre, north of which is given over to independent shops centred on Neal's Yard and Seven Dials, while the south contains the central square with its street performers and most of the elegant buildings, theatres and entertainment facilities, including the London Transport Museum and the Theatre Royal, Drury Lane., Edward I. Altman ( born 1941 ) is a Professor of Finance at New York University 's Stern School of Business . He is best known for the development of the Z - Score for predicting bankruptcy which he published in 1968 . Professor Altman is a leading academic on the High - Yield and Distressed Debt markets and is the pioneer in the building of models for credit risk management and bankruptcy prediction . He is the brother of Stuart Altman . Altman teaches `` Bankruptcy and Reorganization '' and `` Credit Risk Management '' in the Risk Management Open Enrollment program for Stern Executive Education , as well as on the TRIUM Global Executive MBA Program , an alliance of NYU Stern , the London School of Economics and HEC School of Management , and for both the Master of Science in Global Finance ( MSGF ) and Master of Science in Risk Management Program for Executives ( MSRM ) . MSGF is jointly offered by NYU Stern and the Hong Kong University of Science and Technology . He also teaches in the school 's MBA programs and has been a Stern faculty member since 1967 . The Z - Score is a multivariate formula for a measurement of the financial health of a company and a powerful diagnostic tool that forecasts the probability of a company entering bankruptcy within a 2 - year period . Studies measuring the effectiveness of the Z - Score have shown that the model has an 80 % -90 % reliability . Altman 's equation did an excellent job at distinguishing bankrupt and non-bankrupt firms . Altman holds a B.A. in Economics , ( CCNY , 1963 ) ; an MBA ( UCLA , 1965 ) ; and a Ph.D. in Finance ( UCLA , 1967 ) . Altman was inducted into the Fixed Income Society 's Hall of Fame in 2001 and was amongst the inaugural inductees into the Turnaround Management 's Hall of Fame in 2008 . He was named one of the `` 100 Most Influential People in Finance '' by the Treasury & Risk Management magazine in 2005 . Co-founder of the International Risk Management Conference , now in its 7th year ., A research university is a university that expects all its tenured and tenure-track faculty to continuously engage in research, as opposed to merely requiring it as a condition of an initial appointment or tenure. Such universities can be recognized by their strong focus on innovative research and the prestige of their brand names. On the one hand, research universities strive to recruit faculty who are the most brilliant minds in their disciplines in the world, and their students enjoy the opportunity to learn from such experts. On the other hand, new students are often disappointed to realize their undergraduate courses at research universities are overly academic and fail to provide vocational training with immediate "real world" applications; but many employers value degrees from research universities because they know that such coursework develops fundamental skills like critical thinking. , The London School of Economics (officially The London School of Economics and Political Science; often referred to as LSE) is a public research university located in London, England and a constituent college of the federal University of London. Founded in 1895 by Fabian Society members Sidney Webb, Beatrice Webb, Graham Wallas and George Bernard Shaw for the betterment of society, LSE joined the University of London in 1900 and established its first degree courses under the auspices of the University in 1901; the LSE has awarded its own degrees since 2008.
LSE is located in Westminster, central London, near the boundary between Covent Garden and Holborn. The area is historically known as Clare Market. It has students and 3,300 staff, just under half of whom come from outside the UK. It had a total income of £340.7 million in 2015/16, of which £30.3 million was from research grants.<ref name="LSE Financial Statement 15/16"></ref> 155 nationalities are represented amongst LSE's student body and the school has the highest percentage of international students (70%) of all British universities. Despite its name, the school is organised into 25 academic departments and institutes which conduct teaching and research across a range of legal studies and social sciences.
The School is generally recognised as one of the most prestigious universities in the world and as one of the world's leading social science universities, ranked among the top 10 universities nationally by two of the three UK tables and in the top 100 internationally by three of the four major global rankings. In the 2014 Research Excellence Framework, the School had the highest proportion of world-leading research among research submitted of any British non-specialist university. LSE is usually considered part of the golden triangle of highly research-intensive universities in southeast England. It is a member of academic organisations such as the Association of Commonwealth Universities, the European University Association and the Russell Group.
The LSE has produced many notable alumni in the fields of law, history, economics, philosophy, business, literature, media and politics. Alumni and staff include 52 past or present heads of state or government and 20 members of the current British House of Commons. To 2016, 27% (or 13 out of 48) of all the Nobel Prizes in Economics have been awarded or jointly awarded to LSE alumni, current staff or former staff, making up 17% (13 out of 78) of all laureates. LSE alumni and staff have also won 3 Nobel Peace Prizes, and 2 Nobel Prizes in Literature. Out of all European universities, LSE has educated the most billionaires according to a 2014 global census of dollar billionaires. LSE graduates earn higher incomes on average than those of any other British university., The University of London is a collegiate research university located in London, England, consisting of 18 constituent colleges, nine research institutes and a number of central bodies., The Russell Group is a self-selected association of twenty-four public research universities in the United Kingdom. The group is headquartered in London and was established in 1994 to represent its members' interests, principally to government and parliament; nineteen smaller British research universities formed the 1994 Group in response, which has since dissolved. In 2010, Russell Group members received approximately two-thirds of all university research grant and contract income in the United Kingdom. The group is widely perceived as representing the best universities in the country., The Research Excellence Framework is the successor to the Research Assessment Exercise. It is an Impact evaluation; assessing the research of British higher education institutions. It was used in 2014 to assess UK research during the period 20082013., Finance is a field that deals with the study of investments. It includes the dynamics of assets and liabilities over time under conditions of different degrees of uncertainty and risk. Finance can also be defined as the science of money management. Finance aims to price assets based on their risk level and their expected rate of return. Finance can be broken into three different sub-categories: public finance, corporate finance and personal finance., The European University Association (EUA) represents and supports more than 850 institutions of higher education in 47 countries, providing them with a forum for cooperation and exchange of information on higher education and research policies. Members of the Association are European universities involved in teaching and research, national associations of rectors and other organisations active in higher education and research., In finance, return is a profit on an investment. It comprises any change in value and interest or dividends or other such cash flows which the investor receives from the investment. It may be measured either in absolute terms (e.g., dollars) or as a percentage of the amount invested. The latter is also called the holding period return., The Hong Kong University of Science and Technology (HKUST) is a public research university in Clear Water Bay Peninsula, Hong Kong. Established in 1991, it is the territory's youngest higher learning institution with no precursory existence., In financial accounting, an asset is an economic resource. Anything tangible or intangible that can be owned or controlled to produce value and that is held to have positive economic value is considered an asset. Simply stated, assets represent value of ownership that can be converted into cash (although cash itself is also considered an asset)., George Bernard Shaw (26 July 1856  2 November 1950), known at his insistence simply as Bernard Shaw, was an Irish playwright, critic, and polemicist whose influence on Western theatre, culture, and politics extended from the 1880s to his death and beyond. He wrote more than sixty plays, including major works such as "Man and Superman" (1903), "Pygmalion" (1913), and "Saint Joan" (1923). With a range incorporating both contemporary satire and historical allegory, Shaw became the leading dramatist of his generation, and in 1925 was awarded the Nobel Prize in Literature., Central London is the innermost part of London, England. There is no official definition of its area but its characteristics are understood to include a high density built environment, high land values, an elevated daytime population and a concentration of regionally, nationally and internationally significant organisations and facilities. Over time a number of definitions have been used to define the scope of central London for statistics, urban planning and local government. , Martha Beatrice Webb, Baroness Passfield, (née Potter; 22 January 1858  30 April 1943), was an English sociologist, economist, socialist, labour historian and social reformer. It was Webb who coined the term "collective bargaining". She was among the founders of the London School of Economics and played a crucial role in forming the Fabian Society., Graham Wallas (31 May 1858  9 August 1932) was an English socialist, social psychologist, educationalist, a leader of the Fabian Society and a co-founder of the London School of Economics., The Fabian Society is a British socialist organisation whose purpose is to advance the principles of democratic socialism via gradualist and reformist effort in democracies, rather than by revolutionary overthrow. As one of the founding organisations of the Labour Representation Committee in 1900, and as an important influence upon the Labour Party which grew from it, the Fabian Society has had a powerful influence on British politics. Later members of the Fabian Society included Jawaharlal Nehru and other leaders of new nations created out of the former British Empire, who used Fabian principles to create socialist democracies in India, Pakistan, Nigeria and elsewhere as Britain decolonised after World War II., Subject: edward altman, Relation: occupation, Options: (A) academic (B) accounting (C) critic (D) economist (E) entertainment (F) faculty (G) founder (H) investor (I) leader (J) official (K) opera (L) playwright (M) potter (N) psychologist (O) research (P) revolutionary (Q) science (R) social psychologist (S) socialist (T) sociologist (U) student (V) united kingdom
economist

Context: Chemistry is a branch of physical science that studies the composition, structure, properties and change of matter. Chemistry includes topics such as the properties of individual atoms, how atoms form chemical bonds to create chemical compounds, the interactions of substances through intermolecular forces that give matter its general properties, and the interactions between substances through chemical reactions to form different substances., A diamond anvil cell (DAC) is a high-pressure device used in scientific experiments. It enables the compression of a small (sub-millimeter-sized) piece of material to extreme pressures, typically up to around 100200 gigapascals, although it is possible to achieve pressures up to 770 gigapascals (7,700,000 bars / 7.7 million atmospheres)., Cementite, also known as iron carbide, is an intermetallic compound of iron and carbon, more precisely an intermediate transition metal carbide with the formula FeC. By weight, it is 6.67% carbon and 93.3% iron. It has an orthorhombic crystal structure. It is a hard, brittle material, normally classified as a ceramic in its pure form, and is a frequent found and important constituent in ferrous metallurgy. While iron carbide is present in most steels and cast irons, it is produced as a raw material in the Iron Carbide process, which belongs to the family of alternative ironmaking technologies, Diamond (or ) is a metastable allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Diamond is less stable than graphite, but the conversion rate from diamond to graphite is negligible at standard conditions. Diamond is renowned as a material with superlative physical qualities, most of which originate from the strong covalent bonding between its atoms. In particular, diamond has the highest hardness and thermal conductivity of any bulk material. Those properties determine the major industrial application of diamond in cutting and polishing tools and the scientific applications in diamond knives and diamond anvil cells., Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes for use in industrial machinery, cutting tools, abrasives, armor-piercing rounds, other tools and instruments, and jewelry., Carbon (from "coal") is a chemical element with symbol C and atomic number 6. It is nonmetallic and tetravalentmaking four electrons available to form covalent chemical bonds. Three isotopes occur naturally, C and C being stable, while C is a radioactive isotope, decaying with a half-life of about 5,730 years. Carbon is one of the few elements known since antiquity., The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number (number of protons), electron configurations, and recurring chemical properties. This ordering shows "periodic trends", such as elements with similar behaviour in the same column. It also shows four rectangular blocks with some approximately similar chemical properties. In general, within one row (period) the elements are metals on the left, and non-metals on the right., Material is a broad term for a chemical substance or mixture of substances that constitute a thing. , Beryllium carbide , or Be2C , is a metal carbide . Similar to diamond , it is a very hard compound ., In physics, thermal conductivity (often denoted "k", "", or "") is the property of a material to conduct heat. It is evaluated primarily in terms of Fourier's Law for heat conduction., Calcium carbide is a chemical compound with the chemical formula of CaC. Its main use industrially is in the production of acetylene and calcium cyanamide., An interstitial compound, or interstitial alloy, is a compound that is formed when an atom with a small enough radius sits in an interstitial hole in a metal lattice. Examples of small atoms are hydrogen, boron, carbon and nitrogen. The compounds are important industrially and include some transition-metal carbides and nitrides., In chemistry, the term transition metal (or transition element) has three possible meanings:, A metalloid is any chemical element which has properties in between those of metals and nonmetals, or that has a mixture of them. There is neither a standard definition of a metalloid nor complete agreement on the elements appropriately classified as such. Despite the lack of specificity, the term remains in use in the literature of chemistry., An alloy is a mixture of metals or a mixture of a metal and another element. Alloys are defined by a metallic bonding character. An alloy may be a solid solution of metal elements (a single phase) or a mixture of metallic phases (two or more solutions). Intermetallic compounds are alloys with a defined stoichiometry and crystal structure. Zintl phases are also sometimes considered alloys depending on bond types (see also: Van Arkel-Ketelaar triangle for information on classifying bonding in binary compounds)., A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding. For many molecules, the sharing of electrons allows each atom to attain the equivalent of a full outer shell, corresponding to a stable electronic configuration., In chemistry, a carbide is a compound composed of carbon and a less electronegative element. Carbides can be generally classified by chemical bonding type as follows: (i) salt-like, (ii) covalent compounds, (iii) interstitial compounds, and (iv) "intermediate" transition metal carbides. Examples include calcium carbide (CaC), silicon carbide (SiC), tungsten carbide (WC) (often called simply "carbide" when referring to machine tooling), and cementite (FeC), each used in key industrial applications. The naming of ionic carbides is not systematic., Silicon carbide (SiC), also known as carborundum , is a compound of silicon and carbon with chemical formula SiC. It occurs in nature as the extremely rare mineral moissanite. Synthetic silicon carbide powder has been mass-produced since 1893 for use as an abrasive. Grains of silicon carbide can be bonded together by sintering to form very hard ceramics that are widely used in applications requiring high endurance, such as car brakes, car clutches and ceramic plates in bulletproof vests. Electronic applications of silicon carbide such as light-emitting diodes (LEDs) and detectors in early radios were first demonstrated around 1907. SiC is used in semiconductor electronics devices that operate at high temperatures or high voltages, or both. Large single crystals of silicon carbide can be grown by the Lely method; they can be cut into gems known as synthetic moissanite. Silicon carbide with high surface area can be produced from SiO contained in plant material., Graphite, archaically referred to as plumbago, is a crystalline form of carbon, a semimetal, a native element mineral, and one of the allotropes of carbon. Graphite is the most stable form of carbon under standard conditions. Therefore, it is used in thermochemistry as the standard state for defining the heat of formation of carbon compounds., A metal (from Greek  "métallon", "mine, quarry, metal") is a material (an element, compound, or alloy) that is typically hard, opaque, shiny, and has good electrical and thermal conductivity. Metals are generally malleable  that is, they can be hammered or pressed permanently out of shape without breaking or cracking  as well as fusible (able to be fused or melted) and ductile (able to be drawn out into a thin wire). About 91 of the 118 elements in the periodic table are metals, the others are nonmetals or metalloids. Some elements appear in both metallic and non-metallic forms., A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations. The scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification., Subject: beryllium carbide, Relation: instance_of, Options: (A) alloy (B) area (C) bars (D) bond (E) branch (F) cell (G) ceramic (H) change (I) character (J) chemical (K) chemical compound (L) chemical element (M) column (N) composition (O) crystal (P) definition (Q) diamond (R) electron (S) family (T) fine (U) formation (V) formula (W) good (X) hydrogen (Y) intermetallic (Z) law ([) material (\) metal (]) method (^) mine (_) mineral (`) mixture (a) number (b) period (c) phase (d) physics (e) plant (f) quarry (g) row (h) salt (i) semiconductor (j) share (k) sharing (l) single (m) solution (n) stable (o) standard (p) state (q) structure (r) surface (s) symbol (t) table (u) term (v) three (w) variation

chemical compound