Information: - NGC 6334 (also known as the Cat's Paw Nebula, Bear Claw Nebula and Gum 64) is an emission nebula and star-forming region located in the constellation Scorpius. It was discovered by astronomer John Herschel in 1837, who observed it from the Cape of Good Hope in South Africa. - Sir John Frederick William Herschel, 1st Baronet (7 March 1792 11 May 1871) was an English polymath, mathematician, astronomer, chemist, inventor, and experimental photographer, who also did valuable botanical work. He was the son of Mary Baldwin and astronomer William Herschel, nephew of astronomer Caroline Herschel and the father of twelve children. - NGC 6357 is a diffuse nebula near NGC 6334 in the constellation Scorpius . The nebula contains many proto - stars shielded by dark disks of gas , and young stars wrapped in expanding '' cocoons '' or expanding gases surrounding these small stars . It is also known as the Lobster Nebula This nebula was also given the name War and Peace Nebula by the Midcourse Space Experiment scientists because of its appearance . They said that in infrared images the bright , western part resembles a dove , while the eastern part looks like a skull . In the same vein , a petition was created to name it '' Madokami Nebula '' after a character in the anime Puella Magi Madoka Magica by fans because of the nebula 's strong resemblance and meaning . Given the information above, choose from the list below the object entity that exhibits the relation 'discoverer or inventor' with the subject 'ngc 6357'. Choices: - caroline herschel - john frederick william herschel
john frederick william herschel

(Question)
Information: - The Metropolitan Opera House (colloquially The Met) is an opera house located on Broadway at Lincoln Square in the Upper West Side of Manhattan in New York City. Part of Lincoln Center for the Performing Arts, the theater was designed by Wallace K. Harrison. It opened in 1966, replacing the original 1883 Metropolitan Opera House at Broadway and 39th St. With a seating capacity of approximately 3,800, the house is the largest repertory opera house in the world. Home to the Metropolitan Opera Company, the facility also hosts the American Ballet Theatre in the summer months. - The United States Congress is the bicameral legislature of the federal government of the United States consisting of two chambers: the Senate and the House of Representatives. The Congress meets in the Capitol in Washington, D.C. Both senators and representatives are chosen through direct election, though vacancies in the Senate may be filled by a gubernatorial appointment. Members are usually affiliated to the Republican Party or to the Democratic Party, and only rarely to a third party or as independents. Congress has 535 voting members: 435 Representatives and 100 Senators. The House of Representatives has six non-voting members in addition to its 435 voting members. These members can, however, sit on congressional committees and introduce legislation. These members represent Washington, D.C., Puerto Rico, American Samoa, Guam, the Northern Mariana Islands and the U.S. Virgin Islands. - The David H. Koch Theater is a theater for ballet, modern and other forms of dance, part of the Lincoln Center for the Performing Arts located at the intersection of Columbus Avenue and 63rd Street in New York City, United States. Originally named the New York State Theater, the venue has been home to the New York City Ballet since its opening in 1964, the secondary venue for the American Ballet Theatre in the fall, and served as home to the New York City Opera from 1964 to 2011. The theater occupies the south side of the main plaza of Lincoln Center, opposite David Geffen Hall. - The City of New York, often called New York City or simply New York, is the most populous city in the United States. With an estimated 2015 population of 8,550,405 distributed over a land area of just , New York City is also the most densely populated major city in the United States. Located at the southern tip of the state of New York, the city is the center of the New York metropolitan area, one of the most populous urban agglomerations in the world. A global power city, New York City exerts a significant impact upon commerce, finance, media, art, fashion, research, technology, education, and entertainment, its fast pace defining the term "New York minute". Home to the headquarters of the United Nations, New York is an important center for international diplomacy and has been described as the cultural and financial capital of the world. - The Houston Ballet, operated by the Houston Ballet Foundation, is the fourth-largest professional ballet company in the United States, based in Houston, Texas. The foundation also maintains a ballet academy, the Ben Stevenson Academy, which trains more than half of the company's dancers. As of 2011, the Houston Ballet's endowment at more than $55million is considered among the largest endowments held for a dance company in the US. The company produces over 75 performances each year and consists of 51 dancers. - Classical ballet is any of the traditional, formal styles of ballet that exclusively employ classical ballet technique. It is known for its aesthetics and rigorous technique (such as pointe work, turnout of the legs, and high extensions), its flowing, precise movements, and its ethereal qualities. - A ballet company is a group of dancers who perform classical ballet, neoclassical ballet, and/or contemporary ballet in the European tradition, plus managerial and support staff. Most major ballet companies employ dancers on a year-round basis, except in the United States, where contracts for part of the year (typically thirty or forty weeks) are the norm. A company generally has a home theatre where it stages the majority of its performances, but many companies also tour in their home country or internationally. - American Ballet Theatre (ABT) is a classical ballet company based in New York City. It has an annual eight-week season at the Metropolitan Opera House (Lincoln Center) in the spring and a shorter season at the David H. Koch Theater in the fall; the company tours around the world the rest of the year. ABT was founded in 1939 by Lucia Chase and Richard Pleasant and is recognized as one of the world's leading classical ballet companies. ABT is also the parent company of the American Ballet Theatre Jacqueline Kennedy Onassis School, and was recognized as "America's National Ballet Company" in 2006 by the United States Congress. - Marian Butler is a senior corps dancer with the American Ballet Theatre . She was trained at and performed with the Houston Ballet until she was 18 before moving to the American Ballet Theatre . - Ben Stevenson OBE (born 4 April 1936), is a former ballet dancer with Britain's Royal Ballet and English National Ballet, co-director of National Ballet of Washington, D.C. (19711974), artistic director of Chicago Ballet (1974-1975), artistic director of Houston Ballet (19762003), and current artistic director of Texas Ballet Theater (2003present). - Lucia Chase (24 March 1897; Waterbury, Connecticut 9 January 1986; New York City, United States) was an American dancer, actress, ballet director and also the co-founder of the American Ballet Theatre. Given the information above, choose from the list below the object entity that exhibits the relation 'occupation' with the subject 'marian butler'. Choices: - actress - aesthetics - ballet dancer - dancer - democratic party - entertainment - fashion - founder - major - opera
(Answer)
ballet dancer