Question: Sallie Wilson was associated with what classical ballet company in New York City that has an annual eight-week season at the Metropolitan Opera House?
Context: San Francisco Ballet is a ballet company, founded in 1933 as the San Francisco Opera Ballet under the leadership of ballet master Adolph Bolm.  The company is currently based in the War Memorial Opera House, San Francisco, under the direction of Helgi Tomasson.  San Francisco Ballet was the first professional ballet company in the United States.  It is among the world's leading dance companies, presenting more than 100 performances annually, with a repertoire that spans both classical and contemporary ballet.  Along with American Ballet Theatre and the New York City Ballet, San Francisco Ballet has been described as part of the "triumvirate of great classical companies defining the American style on the world stage today". The Cairo Opera Ballet Company is the resident ballet company of the Cairo Opera House and a ballet school affiliated to Egypt's Higher Institute of Ballet.  Its foundation began in 1958 during the presidency of Gamal Abdel Nasser through the efforts of Tharwat Okasha, Egypt's culture minister at the time, and Leonid Lavrovsky, the former artistic director of the Bolshoi Ballet who took a group of Egyptian dancers to Russia for two years of training.  At the time of its founding, it was the only Arab resident classical ballet company in the Middle East. Sallie Wilson (1932–2008) was a noted ballerina who appeared with New York City Ballet where she danced opposite Martha Graham in the premiere of Graham and George Balanchine's collaboration at NYCB, "Episodes" in May, 1959, and subsequently with American Ballet Theatre, where she was associated with several ballets created by Antony Tudor.  In 1966, she achieved a triumph as Hagar in ABT's revival of Tudor's ballet "Pillar of Fire", set to the music of Arnold Schoenberg's "Transfigured Night".  The ballet is loosely based on the poem that inspired Schoenberg piece (although rather loosely) rather than the Biblical story of Hagar. English National Ballet is a classical ballet company founded by Dame Alicia Markova and Sir Anton Dolin and based at Markova House in South Kensington, London, England.  Along with The Royal Ballet, Birmingham Royal Ballet and Scottish Ballet, it is one of the four major ballet companies in Great Britain.  English National Ballet is one of the foremost touring companies in Europe, performing in theatres throughout the UK as well as conducting international tours and performing at special events.  The Company employs approximately 67 dancers and a symphony orchestra, (English National Ballet Philharmonic) and there is also an associate school, English National Ballet School, which is independent from the ballet company.  The Company regularly performs seasons at the London Coliseum and has been noted for specially staged performances at the Royal Albert Hall.  In 2014 English National Ballet became an Associate Company of Sadler's Wells.  The Patron of English National Ballet is HRH The Duke of York. Cork City Ballet is an Irish ballet company founded by Alan Foley, a disciple of Joan Denise Moriarty, in 1992.  It is one of two professional ballet companies in Ireland.  Cork City Ballet annually performs at Cork Opera House, most recently with a production of Giselle.  It has toured venues such as Wexford Opera House, The Helix Tralee's Siamsa Tire and University Concert Hall, Limerick.  Cork City Ballet is known for working with an array of guest artists from companies such as Royal Swedish Ballet and Kirov Ballet.  In 2012, Cork City Ballet commemorated the centenary of the birth of Joan Denise Moriarty, the founder of Irish Theatre Ballet, Ireland's first professional ballet company. The Metropolitan Opera House (also known as The Met) is an opera house located on Broadway at Lincoln Square on 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 Street.  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 Royal Ballet is an internationally renowned classical ballet company, based at the Royal Opera House in Covent Garden, London, UK.  The largest of the four major ballet companies in Great Britain, the Royal Ballet was founded in 1931 by Dame Ninette de Valois, it became the resident ballet company of the Royal Opera House in 1946 and was granted a royal charter in 1956, becoming recognised as Britain's flagship national ballet company. 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. The Hungarian National Ballet (Hungarian: "Magyar Nemzeti Balett" ) is a classical ballet dance company based in Budapest, Hungary.  The ballet company is attached to the Hungarian State Opera House, which is also home to the Hungarian National Opera company and the Hungarian National Philharmonic orchestra.  The ballet company was established in 1884. The School of American Ballet (SAB) is an American classical ballet school and is the associate school of the New York City Ballet, a ballet company based at the Lincoln Center for the Performing Arts in New York City.  The school trains students from the age of six, with professional vocational ballet training for students aged 11–18.  Graduates of the school achieve employment with leading ballet companies worldwide, most notably in the United States with New York City Ballet, American Ballet Theatre, Boston Ballet, and San Francisco Ballet.
Answer: American Ballet Theatre