Question: A symphony of Three Orchestras was dedicated to someone who died in what year?

full_context: Document 1: Francis Poulenc: Francis Jean Marcel Poulenc (] ; 7 January 189930 January 1963) was a French composer and pianist. His compositions include "mélodies", solo piano works, chamber music, choral pieces, operas, ballets, and orchestral concert music. Among the best-known are the piano suite "Trois mouvements perpétuels" (1919), the ballet "Les biches" (1923), the "Concert champêtre" (1928) for harpsichord and orchestra, the Organ Concerto (1938), the opera "Dialogues des Carmélites" (1957), and the "Gloria" (1959) for soprano, choir and orchestra.
Document 2: Three Occasions for Orchestra: Three Occasions for Orchestra is an orchestral triptych by the American composer Elliott Carter. The work was composed from 1986 through 1989 and was first performed at the Royal Festival Hall, London, by the BBC Symphony Orchestra under Oliver Knussen on October 5, 1989.
Document 3: Pierre Boulez: Pierre Louis Joseph Boulez CBE (] ; 26 March 1925 – 5 January 2016) was a French composer, conductor, writer and organiser of institutions. He was one of the dominant figures of the post-war classical music world.
Document 4: Le Visage nuptial: Le Visage nuptial ("The Nuptial Face") is a secular cantata for soprano, contralto, choir of women and orchestra by Pierre Boulez. Originally composed in 1946–47 on a poem by René Char for two voices, two ondes Martenot, piano and percussion, the work, revised in 1951–52 in a version for voices and orchestra, was premiered on 4 December 1957 in Cologne conducted by the composer. The score was further revised in 1989, removing the quarter tones present in the second and fifth parts of the 1951–52 version, while revising the orchestration. A version with final revisions by the composer was premiered on 25 February 2014 at the Cité de la Musique in Paris during the closing concert of the festival "Présences" of Radio France.
Document 5: A Symphony of Three Orchestras: A Symphony of Three Orchestras is an orchestra composition by the American composer Elliott Carter. The work was commissioned by the New York Philharmonic through a grant from the National Endowment for the Arts. It was composed from June through December 1976 and was first performed in New York City on February 17, 1977 by the New York Philharmonic under the conductor Pierre Boulez. The composition is dedicated to Boulez and the New York Philharmonic.
Document 6: Symphony in Three Movements: The Symphony in Three Movements is a work by Russian expatriate composer Igor Stravinsky. Stravinsky wrote the symphony from 1942–45 on commission by the Philharmonic Symphony Society of New York. It was premièred by the New York Philharmonic Orchestra under Stravinsky on January 24, 1946.
Document 7: Adrian Boult: Sir Adrian Cedric Boult, CH ( ; 8 April 1889 – 22 February 1983) was an English conductor. Brought up in a prosperous mercantile family, he followed musical studies in England and at Leipzig, Germany, with early conducting work in London for the Royal Opera House and Sergei Diaghilev's ballet company. His first prominent post was conductor of the City of Birmingham Orchestra in 1924. When the British Broadcasting Corporation appointed him director of music in 1930, he established the BBC Symphony Orchestra and became its chief conductor. The orchestra set standards of excellence that were rivalled in Britain only by the London Philharmonic Orchestra (LPO), founded two years later.
Document 8: Maurice Ravel: Joseph Maurice Ravel (] ; 7 March 1875 – 28 December 1937) was a French composer, pianist and conductor. He is often associated with impressionism along with his elder contemporary Claude Debussy, although both composers rejected the term. In the 1920s and 1930s Ravel was internationally regarded as France's greatest living composer.
Document 9: Symphony (Stucky): The Symphony by the American composer Steven Stucky is a four-movement symphony for orchestra. The work was jointly commissioned by the New York Philharmonic and the Los Angeles Philharmonic. It was composed from January through July 2012 and premiered September 28, 2012 at the Walt Disney Concert Hall in Los Angeles, with conductor Gustavo Dudamel leading the Los Angeles Philharmonic. The work had its New York City premiere November 29, 2012, with Alan Gilbert leading the New York Philharmonic.
Document 10: Concerto for Orchestra (Sessions): The Concerto for Orchestra is a composition for orchestra by the American composer Roger Sessions. The work was commissioned by the Boston Symphony Orchestra and premiered October 23, 1981, with conductor Seiji Ozawa leading the Boston Symphony Orchestra. The concerto was Sessions's last orchestral composition and won him the 1982 Pulitzer Prize for Music. Sessions had previously won a special lifetime achievement Pulitzer Prize in 1974 "for his life's work as a distinguished American composer." The piece was honored with a performance at the closing of the 50th Tanglewood Music Festival in 2014.
Document 11: Symphonia: sum fluxae pretium spei: The Symphonia: sum fluxae pretium spei is an orchestral triptych by the American composer Elliott Carter. Its three movements were composed between 1993 and 1995. The complete work was first performed on April 25, 1998 at Bridgewater Hall, Manchester by the BBC Symphony Orchestra under the conductor Oliver Knussen. The second movement "Adagio tenebroso" was a finalist for the 1996 Pulitzer Prize for Music.
Document 12: Hector Berlioz: Louis-Hector Berlioz (] (English: ); 11 December 1803 – 8 March 1869) was a French Romantic composer, best known for his compositions "Symphonie fantastique" and "Grande messe des morts" (Requiem). Berlioz made significant contributions to the modern orchestra with his "Treatise on Instrumentation". He specified huge orchestral forces for some of his works, and conducted several concerts with more than 1,000 musicians. He also composed around 50 songs. His influence was critical for the further development of Romanticism, especially in composers like Richard Wagner, Nikolai Rimsky-Korsakov, Franz Liszt, Richard Strauss, and Gustav Mahler.
Document 13: Dialogues (Carter): Dialogues is a composition for solo piano and chamber orchestra by the American composer Elliott Carter. The work was commissioned by the BBC for the pianist Nicolas Hodges and completed in 2003. It was first performed on January 23, 2004 at the Queen Elizabeth Hall in Southbank Centre, London, by Nicolas Hodges and the London Sinfonietta under the conductor Oliver Knussen. The piece was a finalist for the 2005 Pulitzer Prize for Music. In 2012, Carter composed a followup to the piece "Dialogues II" for the conductor Daniel Barenboim's 70th birthday.
Document 14: Benjamin Britten: Edward Benjamin Britten, Baron Britten {'1': ", '2': ", '3': ", '4': "} (22 November 1913 – 4 December 1976) was an English composer, conductor and pianist. He was a central figure of 20th-century British classical music, with a range of works including opera, other vocal music, orchestral and chamber pieces. His best-known works include the opera "Peter Grimes" (1945), the "War Requiem" (1962) and the orchestral showpiece "The Young Person's Guide to the Orchestra" (1945).
Document 15: Asko Concerto: The Asko Concerto is a concerto for chamber orchestra by the American composer Elliott Carter. The work was commissioned by the Dutch chamber group Asko Ensemble, for which the piece is titled. It was composed in January 2000 and was first performed in Concertgebouw, Amsterdam on April 26, 2000, by the Asko ensemble under the conductor Oliver Knussen. The piece is dedicated to Asko/Schönberg.
ground_truth: 2016