Question: What is the name of the person who helped work on Les Sylphides and past away 22 August 1942?

full_context: Document 1: Marius Petipa: Marius Ivanovich Petipa (Russian: Ма́риус Ива́нович Петипа́), born Victor Marius Alphonse Petipa (11 March 181814 July [O.S. 1 July] 1910 ) was a French and Russian ballet dancer, pedagogue and choreographer. Petipa is considered to be the most influential ballet master and choreographer in ballet history.
Document 2: The Dying Swan: The Dying Swan (originally "The Swan") is a solo choreographed by Mikhail Fokine in 1905 to Camille Saint-Saëns's "Le Cygne" from "Le Carnaval des animaux" as a "pièce d'occasion" for the ballerina Anna Pavlova, who performed it about 4,000 times. The short ballet (4 minutes) follows the last moments in the life of a swan, and was first presented in St. Petersburg, Russia in 1905. The ballet has since influenced modern interpretations of Odette in Tchaikovsky's "Swan Lake" and has inspired non-traditional interpretations and various adaptations.
Document 3: Michel Fokine: Michael Fokine (a French transliteration Michel Fokine; English transliteration Mikhail Fokin; Russian: Михаи́л Миха́йлович Фо́кин , "Mikhaíl Mikháylovich Fokín") (23 April [O.S. 11 April] 1880 – 22 August 1942) was a groundbreaking Russian choreographer and dancer.
Document 4: Petrushka (ballet): Petrushka (French: "Pétrouchka" ; Russian: "Петрушка" ) is a ballet burlesque in four scenes. It was composed in 1910–11 and revised in 1947. Igor Stravinsky composed the music, and, with Alexandre Benois, fashioned the libretto. Michel Fokine choreographed the ballet; Benois designed the sets and costumes. "Petrushka" was first performed by Sergei Diaghilev's Ballets Russes at the Théâtre du Châtelet in Paris on 13 June 1911. Vaslav Nijinsky portrayed Petrushka with Tamara Karsavina as the Ballerina. Alexander Orlov portrayed the Moor, and Enrico Cecchetti the Charlatan.
Document 5: La source (Balanchine): Balanchine's had previously made a "pas de deux" to music from Léo Delibes' "Sylvia" in 1950; he expanded this into a divertissement in 1965. The final version uses music from Delibes' ballets "La source" and "Sylvia" and choreography from the earlier pas de deux and divertissement.
Document 6: Léonide Massine: Leonid Fyodorovich Myasin (Russian: Леони́д Фёдорович Мя́син ), better known in the West by the French transliteration as Léonide Massine (9 August [O.S. 28 July] 1896 15 March 1979), was a Russian choreographer and ballet dancer. Massine created the world's first symphonic ballet, "Les Présages", and many others in the same vein. Besides his "symphonic ballets," Massine choreographed many other popular works during his long career, some of which were serious and dramatic, and others lighthearted and romantic. He created some of his most famous roles in his own comic works, among them the Can-Can Dancer in "La Boutique fantasque" (1919), the Hussar in "Le Beau Danube" (1924), and, perhaps best known of all, the Peruvian in "Gaîté Parisienne" (1938).
Document 7: Rudolf Nureyev: Rudolf Khametovich Nureyev (Bashkir: Рудольф Хәмит улы Нуриев , Tatar: Рудольф Хәмит улы Нуриев , Russian: Рудо́льф Хаме́тович Нуре́ев ; 17 March 1938 – 6 January 1993) was a Soviet ballet dancer and choreographer. He was director of the Paris Opera Ballet from 1983 to 1989 and its chief choreographer until October 1992.
Document 8: Mikhail Baryshnikov: Mikhail Nikolayevich Baryshnikov (Russian: Михаи́л Никола́евич Бары́шников , Latvian: "Mihails Barišņikovs" ; born January 27, 1948), nicknamed "Misha" (Russian diminutive of the name "Mikhail"), is a Soviet and American dancer, choreographer, and actor.
Document 9: Swan Lake (1895): The 1917 Petipa/Ivanov/Drigo revival of Swan Lake is a famous version of the ballet "Swan Lake", (ru. "Лебединое Озеро"), (fr. "Le Lac des Cygnes"). This is a ballet by Pyotr Ilyich Tchaikovsky based on an ancient German legend, presented in either four acts, four scenes (primarily outside Russia and Eastern Europe), three acts, four scenes (primarily in Russia and Eastern Europe) or, more rarely, in two acts, four scenes. Originally choreographed by Julius Reisinger to the music of Pyotr Ilyich Tchaikovsky (opus 20), it was first presented as "The Lake of the Swans" by the Ballet of the Moscow Imperial Bolshoi Theatre on 20 February/4 March 1877 (Julian/Gregorian calendar dates) in Moscow, Russia. Although the ballet is presented in many different versions, most ballet companies today base their stagings both choreographically and musically on this revival by Marius Petipa and Lev Ivanov, staged for the Imperial Ballet, first presented on 15 January/27 January 1895, at the Imperial Mariinsky Theatre in St. Petersburg, Russia instead of the original version.
Document 10: The Magic Flute (ballet): La flûte magique (en. "The Magic Flute") (ru. «Волшебная флейта», "Volshebnaya Fleita") is a "ballet comique" in one act, originally choreographed by Lev Ivanov to the music of Riccardo Drigo. Although it has the same title as Mozart's opera "The Magic Flute", the two works have no other connection. First presented by students of the Imperial Ballet School at the school's theatre on 4 February [O.S. 23 January] 1893 . The principal ballerina role of Lise was created by Stanislava Belinskaya, while the principal male role of Luc was created by Mikhail Fokine.
Document 11: Yury Grigorovich: Yury Nikolayevich Grigorovich (Russian: Ю́рий Никола́евич Григоро́вич ; born 2 January 1927 in Leningrad) is a Soviet and Russian dancer and choreographer who dominated the Russian ballet for 30 years.
Document 12: Bob Fosse: Robert Louis Fosse (June 23, 1927 – September 23, 1987) was an American dancer, musical theatre choreographer, director, screenwriter, film director and actor.
Document 13: Les Sylphides: Les Sylphides (] ) is a short, non-narrative "ballet blanc". Its original choreography was by Michel Fokine, with music by Frédéric Chopin orchestrated by Alexander Glazunov. Glazunov had already set some of the music in 1892 as a purely orchestral suite, under the title Chopiniana, Op. 46. In that form it was introduced to the public in December 1893, conducted by Nikolai Rimsky-Korsakov.
Document 14: Les biches: Les biches (] , "The Hinds" or "The Little Darlings") is a ballet choreographed by Bronislava Nijinska to music by Francis Poulenc, premiered by the Ballets Russes on 6 January 1924. Some consider this piece a milestone in ballet history. The composer, who was at the time relatively unknown, was asked by Serge Diaghilev to write a piece based on Glazunov's "Les Sylphides", written seventeen years earlier. Poulenc, however, chose to base his work on the paintings of Watteau that depicted Louis XV and various women in his "Parc aux biches". The word "biche" is usually translated as "doe," an adult female deer. "Does" was used as a slang for coquettish women. Poulenc described his work as a "contemporary drawing room party suffused with an atmosphere of wantonness, which you sense if you are corrupted, but of which an innocent-minded girl would not be conscious."
Document 15: Vaslav Nijinsky: Vaslav Nijinsky (also Vatslav; Russian: Ва́цлав Фоми́ч Нижи́нский ; ] ; Polish: "Wacław Niżyński" ; 12 March 1889/18908 April 1950) was a Russian ballet dancer and choreographer of Polish descent, cited as the greatest male dancer of the early 20th century. He was celebrated for his virtuosity and for the depth and intensity of his characterizations. He could dance "en pointe", a rare skill among male dancers at the time and was admired for his seemingly gravity-defying leaps.
ground_truth: Michael Fokine