Question: This work that precedes Igor Stravinsky's Cantana is composed of how many acts?

Context paragraphs:
Cantata (Stravinsky): The Cantata by Igor Stravinsky is a work for soprano, tenor, female choir, and instrumental ensemble (of two flutes, oboe, cor anglais (doubling second oboe), and cello), and was composed from April 1951 to August 1952.  The premiere performance on 11 November 1952 was by the Los Angeles (Chamber) Symphony Society (to whom the work is dedicated), conducted by Stravinsky himself.  After completing the opera "The Rake's Progress", Stravinsky felt the urge to compose another work setting English words, but in a non-dramatic form .

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.

The Rake's Progress: The Rake's Progress is an opera in three acts and an epilogue by Igor Stravinsky.  The libretto, written by W. H. Auden and Chester Kallman, is based loosely on the eight paintings and engravings "A Rake's Progress" (1733–1735) of William Hogarth, which Stravinsky had seen on 2 May 1947, in a Chicago exhibition.

Serenade (Stravinsky): Serenade in A is a composition for solo piano by Russian composer Igor Stravinsky.  It was completed on September 9, 1925, in Vienna, and published by Boosey & Hawkes This work was composed as a result of his signing his first recording contract for Brunswick, so Stravinsky wrote the piece in a way that each movement would fit on one side of a 78 rpm gramophone record.  It was dedicated to his wife.

Thomas Rajna: His first commercial recording was the complete piano solo works of Igor Stravinsky.  Since then he has recorded music by Alexander Scriabin, Robert Schumann and Olivier Messiaen, the piano part of Igor Stravinsky's "Petrushka" with the New Philharmonia under Erich Leinsdorf, and Béla Bartók's "Music for Strings, Percussion and Celesta" with Sir Georg Solti and the London Symphony Orchestra.  He has completed a cycle of recordings devoted to the entire piano music of Enrique Granados.  Subsequently he undertook to record Franz Liszt's 12 "Transcendental Etudes" and "12 Etudes", Op. 1.  Rajna has often performed his own two piano concertos.

Stravinsky Fountain: The Stravinsky Fountain (French:" La Fontaine Stravinsky") is a whimsical public fountain ornamented with sixteen works of sculpture, moving and spraying water, representing the works of composer Igor Stravinsky.  It was created in 1983 by sculptors Jean Tinguely and Niki de Saint Phalle, and is located on Place Stravinsky, next to the Centre Pompidou, in Paris.

Threni (Stravinsky): Threni: id est Lamentationes Jeremiae Prophetae, usually referred to simply as Threni, is a musical setting by Igor Stravinsky of verses from the Book of Lamentations in the Latin of the Vulgate, for solo singers, chorus and orchestra.  It is important among Stravinsky's compositions as his first and longest completely dodecaphonic work, but is not often performed.  It has been described as "austere" but also as a "culminating point" in his career as an artist, "important both spiritually and stylistically" and "the most ambitious and structurally the most complex" of all his religious compositions, and even "among Stravinsky's greatest works".

Sonata for Two Pianos (Stravinsky): Sonata for Two Pianos is a composition by Russian composer Igor Stravinsky, premiered in 1944 by Richard Johnston and Nadia Boulanger.  First conceived as a solo work, Stravinsky needed to write it for four hands to voice all four melodic lines clearly.  It is considered one of Stravinsky's most important compositions for two solo pianos, together with Concerto for Two Pianos.

Agon (ballet): Agon (1957) is a ballet for twelve dancers, with music by Igor Stravinsky and choreography by George Balanchine.  Composition began in December 1953 but was interrupted the next year; work was resumed in 1956 and concluded on April 27, 1957; the music was first performed on June 17, 1957, in Los Angeles conducted by Robert Craft, while the first stage performance was given by the New York City Ballet on December 1, 1957, at the City Center of Music and Drama, New York .  The composition's long gestation period covers an interesting juncture in Stravinsky's composing career, in which he moved from a diatonic musical language to one based on twelve-tone technique; the music of the ballet thus demonstrates a unique symbiosis of musical idioms.  The ballet has no story, but consists of a series of dance movements in which various groups of dancers interact in pairs, trios, quartets, etc.  A number of the movements are based on 17th-century French court dances – saraband, galliard and bransle.  It was danced as part of City Ballet's 1982 Stravinsky Centennial Celebration.

Concerto in E-flat &quot;Dumbarton Oaks&quot;: Concerto in E-flat, subtitled Dumbarton Oaks 8-v-1938 (1937–38) is a chamber concerto by Igor Stravinsky, named for the Dumbarton Oaks estate of Robert Woods Bliss and Mildred Barnes Bliss in Washington, DC, who commissioned it for their thirtieth wedding anniversary.  Composed in Stravinsky's neo-classical period, the piece is one of Stravinsky's two chamber concertos (the other being the Concerto in D, for strings, 1946) and is scored for a chamber orchestra of flute, B♭ clarinet, bassoon, two horns, three violins, three violas, two cellos, and two double basses.  The three movements, Tempo giusto, Allegretto, and Con moto, performed without a break, total roughly twelve minutes.  The concerto was heavily inspired by Bach's set of Brandenburg Concertos, and was the last work Stravinsky completed in Europe, started in spring 1937 at the Château de Montoux near Annemasse, near Geneva, Switzerland, and finished in Paris on March 29, 1938 .

Supporting paragraphs: Cantata (Stravinsky) The Rake's Progress
Answer: three