Question: Are Alfred L. Werker and Merian C. Cooper both directors?

full_context: Document 1: Alfred E. Green: Alfred E. Green (July 11, 1889 in Perris, California – September 4, 1960 in Hollywood, California) was a prolific movie director. Green entered film in 1912 as an actor for the Selig Polyscope Company. He became an assistant to director Colin Campbell. He then started to direct two-reelers until he started features in 1917.
Document 2: Kościuszko's Squadron: The name Kościuszko's Squadron or Kościuszko's Escadrille, taken from the Polish-Lithuanian hero Tadeusz Kościuszko, has been borne by several units of the Polish Air Force throughout its history. Each used the insignia designed by Eliott Chess, an American pilot serving with the Polish Army during the Polish-Soviet War. One of the most famous pilots was Merian C. Cooper, producer of the 1933 movie King Kong, who was decorated for valor by Polish commander-in-chief Józef Piłsudski with the highest Polish military decoration, the Virtuti Militari. During WW II the Kościuszko Squadron was formed by refugee Polish pilots who joined the RAF and played an essential role in helping save England during the Battle of Britain and of their betrayal by the United States and England at the end of World War II.
Document 3: Albert Parker (director): Albert Parker (May 11, 1885 – August 10, 1974) was an American film director, producer, screenwriter and actor. He directed 36 films between 1917 and 1938. In the early 1930s Parker left Hollywood for England where he continued to direct films and also opened an actors' agency office. One of his later clients in the 1960s was a young actress named Helen Mirren.
Document 4: Hello, Sister!: Hello, Sister! is a 1933 American pre-Code drama film directed by Alan Crosland, Erich von Stroheim, Raoul Walsh, and Alfred L. Werker. It is a re-edited version of von Stroheim's now-lost film Walking Down Broadway. "Hello, Sister!" was itself thought to have perished as well, until a print was found in the 1970s.
Document 5: William A. Wellman: William Augustus Wellman (February 29, 1896 – December 9, 1975) was an American film director notable for his work in crime, adventure and action genre films, often focusing on aviation themes, a particular passion. He also directed several well-regarded satirical comedies. Beginning his film career as an actor, he went on to direct over 80 films, at times co-credited as producer and consultant. In 1927, Wellman directed "Wings", which became the first film to win an Academy Award for Best Picture at the 1st Academy Awards ceremony.
Document 6: Fred Fleck: Fred Fleck (June 6, 1892 – November 9, 1961), also known as Fred A. Fleck, Frederick Fleck, or Freddie Fleck, was an American assistant director and production manager. Born in New York City on June 4, 1892, he broke into the film business as an assistant director on the 1928 silent film, "The Riding Renegade", directed by Wallace Fox. During his 30-year career, he would work on some notable films, with some notable directors. Some of those films include: the epic "Hell's Angels" (1930), directed by Howard Hughes; King Vidor's "Bird of Paradise" (1932); the Ginger Rogers' 1941 vehicle, Tom, Dick and Harry, directed by Garson Kanin; 1942's "The Magnificent Ambersons", directed by Orson Welles, and starring Joseph Cotten and Anne Baxter; "Born to be Bad" (1950), starring Joan Fontaine and Robert Ryan; and Josef von Sternberg's "Jet Pilot" (1957), starring John Wayne. Fleck was also one of the aerial cameramen on George Archainbaud's classic 1932 film, "The Lost Squadron".
Document 7: Alfred L. Werker: Alfred L. Werker (December 2, 1896 – July 28, 1975) was a film director whose work in movies spanned from 1917 through 1957. After a number of film production jobs and assistant directing, Werker co-directed his first film, "Ridin' the Wind" in 1925 alongside director Del Andrews. He was brought in by Fox Film Corporation executives to re-shoot and re-edit Erich von Stroheim's film "Hello, Sister!" (1933), co-starring Boots Mallory and ZaSu Pitts.
Document 8: God Is My Co-Pilot (film): God is My Co-Pilot is a 1945 American black-and-white biographical war film from Warner Bros. Pictures, produced by Robert Buckner, directed by Robert Florey, that stars Dennis Morgan and co-stars Dane Clark and Raymond Massey. The screenplay by Abem Finkel and Peter Milne is based on the 1943 autobiography of the same name by Robert Lee Scott, Jr. (April 12, 1908 – February 27, 2006) and tells the story of Scott's involvement with the Flying Tigers and the United States Army Air Forces in China and Burma during World War II.
Document 9: The White Hell of Pitz Palu: The White Hell of Pitz Palu (German: "Die weisse Hölle vom Piz Palü" ) is a 1929 German silent mountain film co-directed by Arnold Fanck and Georg Wilhelm Pabst and starring Leni Riefenstahl, Gustav Diessl, Ernst Petersen, and World War I flying ace Ernst Udet. Written by Arnold Fanck and Ladislaus Vajda, the film is about a man who loses his wife in an avalanche while climbing the Piz Palü mountain, and spends the next few years searching the mountain alone for her body. Four years later he meets a young couple who agree to accompany him on his next climb. "The White Hell of Pitz Palu" was filmed on location in the Bernina Range in Graubünden, Switzerland. The 1929 theatrical release starred Kurt Gerron, who was Jewish, as a night club guest. The film was edited to remove scenes featuring Gerron, and it was rereleased as a 90-minute German-language sound film in 1935. It was remade in 1950.
Document 10: Arthur Roberts (editor): Arthur Roberts July 17, 1890 – February 5, 1961), also known as Arthur E. Roberts, was an American film editor who edited over 100 films during his almost 30 year career. He began ending towards the end of the silent era of the film industry, his first film being 1927's "The College Hero", directed by Walter Lang. His last film was Republic's "Lay That Rifle Down" in 1955, after which he spent a brief period as the editor for the television series, "Lassie", before retiring in 1956. During his career he would work with many famous directors, including Frank Capra (on several films, including "The Donovan Affair"), Lowell Sherman (on "The Royal Bed"), William Seiter (on several films, including "Way Back Home"), Edward Cline (on "Cracked Nuts"), George Cukor ("A Bill of Divorcement"), Dorothy Arzner (the first female member of the DGA, on "Christopher Strong"), Anthony Mann ("Strangers in the Night"), George Archainbaud ("Girls of the Big House"), Fritz Lang ("House by the River"),
Document 11: The High and the Mighty (film): The High and the Mighty is a 1954 "WarnerColor" American "disaster" film in CinemaScope directed by William A. Wellman and written by Ernest K. Gann who also wrote the 1953 novel on which his screenplay was based. The film's cast was headlined by John Wayne, who was also the project's co-producer. Composer Dimitri Tiomkin won an Academy Award for his original score while his title song for the film also was nominated for an Oscar (although the title song did not actually appear in release prints nor in the recent restoration of the film). The film received mostly positive reviews and grossed $8.5 million in its theatrical release. The supporting cast includes Claire Trevor, Laraine Day, Robert Stack, Jan Sterling, Phil Harris and Robert Newton.
Document 12: Merian C. Cooper: Merian Caldwell Cooper (October 24, 1893 – April 21, 1973) was an American aviator, United States Air Force and Polish Air Force officer, adventurer, screenwriter, film director, and producer. Cooper was the founder of the Kościuszko Squadron during the Polish–Soviet War and was a Soviet prisoner of war for a time. He was a notable movie producer, and got his start with film as part of the Explorers Club, traveling the world and documenting adventures. He was a member of the board of directors of Pan American Airways, but his love of film always took priority. During his film career, he worked for companies such as Pioneer Pictures, RKO Pictures, and Metro-Goldwyn-Mayer. He is also credited as co-inventor of the Cinerama film projection process. Cooper's most famous film was the 1933 movie "King Kong". He was awarded an honorary Oscar for lifetime achievement in 1952 and received a star on the Hollywood Walk of Fame in 1960.
Document 13: King Kong (1933 film): King Kong is a 1933 American pre-Code monster adventure film directed and produced by Merian C. Cooper and Ernest B. Schoedsack. The screenplay by James Ashmore Creelman and Ruth Rose was from an idea conceived by Cooper and Edgar Wallace. It stars Fay Wray, Bruce Cabot and Robert Armstrong, and opened in New York City on March 2, 1933, to rave reviews. It has been ranked by Rotten Tomatoes as the greatest horror film of all time and the twentieth greatest film of all time.
Document 14: Howard Hughes: Howard Robard Hughes Jr. (December 24, 1905 – April 5, 1976) was an American businessman, investor, pilot, film director, and philanthropist, known during his lifetime as one of the most financially successful individuals in the world. He first made a name for himself as a film producer, and then became an influential figure in the aviation industry. Later in life, he became known for his eccentric behavior and reclusive lifestyle—oddities that were caused in part by a worsening obsessive–compulsive disorder (OCD) and chronic pain from a plane crash.
Document 15: Cinerama Adventure: Cinerama Adventure is a 2002 documentary about the history of the Cinerama widescreen film process. It tells the story of the widescreen process' evolution, from a primitive multi-screen pyramid process to a Vitarama format that played a big part in World War II, to the three-screen panoramic process it eventually became. The film includes interviews with surviving cast and crew who personally worked on the Cinerama films, plus vintage interviews with late creator Fred Waller.
ground_truth: yes