Question: What did Nathanael West do that Jacques Prévert did not?
Context: Le jour se lève (] , "The day rises"; also known as Daybreak) is a 1939 French film directed by Marcel Carné and written by Jacques Prévert, based on a story by Jacques Viot.  It is considered one of the principal examples of the French film movement known as poetic realism. Jacques Prévert (] ; 4 February 190011 April 1977) was a French poet and screenwriter.  His poems became and remain popular in the French-speaking world, particularly in schools.  His best-regarded films formed part of the poetic realist movement, and include "Les Enfants du Paradis" (1945). The Seine Meets Paris (French: La Seine a rencontré Paris ) is a 1957 French short documentary film directed by Joris Ivens from a screenplay by Jacques Prévert.  Told from the perspective of a boat trip through the city, it features scenes of daily life along the river.  The film won the short film Palme d'Or at the 1958 Cannes Film Festival. The King and the Mockingbird (French: Le Roi et l'oiseau , literally "The King and the Bird") is a 1980 traditionally animated feature film directed by Paul Grimault.  Begun in 1948 as "The Shepherdess and the Chimney Sweep" (loosely based on the fairy tale of the same name by Hans Christian Andersen), the film was a collaboration between Grimault and popular French poet and screenwriter, Jacques Prévert.  However the film suddenly stopped production and was released unfinished by its producer, without the approval of either Grimault or Prévert.  Through the course of the 1960s and 1970s, Grimault obtained the rights to the film and was able to complete a new version as they originally intended.  It was finished over 30 years after it was started. Gates of the Night (French: Les Portes de la nuit ) is a 1946 French film that was directed by Marcel Carné.  It starred Serge Reggiani and Yves Montand.  The script was written by Carné's long-time collaborator Jacques Prévert.  The film made its debut in the United States four years after its official release in France.  It introduced the much-recorded popular song "Autumn Leaves" (French: "Les feuilles mortes"). Nathanael West (born Nathan Weinstein; October 17, 1903 – December 22, 1940) was an American author, screenwriter and satirist. James F. Light was an American literary scholar, university vice president, and provost.  During his academic career, he helped revive the works of satirist Nathanael West, with the first book length critical study of his work, "Nathanael West: An Interpretive Study", (Northwestern Univ.  Press, 1961).  He was also the leading authority on John William De Forest, the early American realist whose work he critiqued in "John William De Forest" (Twayne Pub., 1965), and he wrote extensively on J. D. Salinger, Robert Penn Warren and others. Sail Mohamed Ameriane ben Amerzaine (October 14, 1894 – April 1953) was an Algerian and French anarchist who fought in the Spanish Civil War.  The French writer Jacques Prévert dedicated a poem to him. Marianne Oswald (January 9, 1901 – February 25, 1985) was the stage name of Sarah Alice Bloch, a French singer and actress born in Sarreguemines in Alsace-Lorraine.  She took this stage name from a character she much admired, the unhappy Oswald in the Ibsen play Ghosts.  She was noted for her hoarse voice, heavy half-Lorraine, half-German accent, and for singing about unrequited love, despair, sadness, and death.  She sang the songs of Kurt Weill and Bertolt Brecht.  She was friends with Jean Cocteau, Jacques Prévert, François Mauriac, and Albert Camus.  In fact, the text for one of her album covers was written by Camus.  She was an inspiration for the composers Francis Poulenc and Arthur Honegger. Jacques Marie Prevel (1915 Paris - 1951 ) was a French poet.  His real first name was Jacques, but he added 'Marie' not to be mistaken with Jacques Prévert, whose surname is pronounced in a very similar way.  During the German occupation he lived in the famous Parisiene district Saint-Germain-des-Près.
Answer: American author, screenwriter and satirist