Question: Delbert Mann and Stuart Heisler, have which mutual occupations?

full_context: Document 1: John M. Stahl: John Malcolm Stahl (January 21, 1886 – January 12, 1950) was an American film director and producer.
Document 2: Robert Altman: Robert Bernard Altman ( ; February 20, 1925 – November 20, 2006) was an American film director, screenwriter, and film producer. A five-time nominee of the Academy Award for Best Director and an enduring figure from the New Hollywood era, Altman was considered a "maverick" in making films with a highly naturalistic but stylized and satirical aesthetic, unlike most Hollywood films. He is consistently ranked as one of the greatest and most influential filmmakers in American cinema.
Document 3: Ralph Staub: Ralph Staub (July 21, 1899 in Chicago, Illinois – October 22, 1969, Los Angeles, California) was a movie director, writer and producer.
Document 4: Stu Linder: Stewart Bridgewater Linder (November 8, 1931 – January 12, 2006) was an American film editor with 25 credits. He shared the Academy Award for Film Editing for the 1966 film "Grand Prix" (directed by John Frankenheimer), which was the very first film on which Linder was credited as an editor. Linder is particularly noted for his long collaboration (1982-2006) with the director Barry Levinson. Perhaps the best remembered film from their collaboration, which extended over 20 films, was "Rain Man" (1988), which won the Academy Award for Best Picture. Linder won an ACE Eddie award for editing this film, and was nominated for both the Academy Award and the BAFTA Award for Best Editing.
Document 5: Stuart Heisler: Stuart Heisler (December 5, 1896 – August 21, 1979) was an American film and television director. He was a son of Luther Albert Heisler (1855-1916), a carpenter, and Frances Baldwin Heisler (1857-1935). He worked as a motion picture editor from 1921 to 1936, then dedicated the rest of his career to that of a film director.
Document 6: Stuart Rosenberg: Stuart Rosenberg (August 11, 1927 – March 15, 2007) was an American film and television director whose motion pictures include "Cool Hand Luke" (1967), "Voyage of the Damned" (1976), "The Amityville Horror" (1979), and "The Pope of Greenwich Village" (1984). He was noted for his work with actor Paul Newman.
Document 7: Delmer Daves: Delmer Lawrence Daves (July 24, 1904 – August 17, 1977) was an American screenwriter, director and producer.
Document 8: Delbert Mann: Delbert Martin Mann Jr. (January 30, 1920 – November 11, 2007) was an American television and film director. He won the Academy Award for Best Director for the film "Marty" (1955), adapted from a 1953 teleplay of the same name which he had also directed. From 1967 to 1971, he was president of the Directors Guild of America. In 2002, he received the DGA's honorary life member award. Mann was credited to have "helped bring TV techniques to the film world."
Document 9: Joe Mantell: Joe Mantell (né Mantel; December 21, 1915 – September 29, 2010) was an American actor of film and television. He was nominated for an Academy Award for Best Supporting Actor for his role as Angie in the 1955 film "Marty", which earned the Best Picture Award.
Document 10: Nate Heisler: Nate Heisler is a MLBPA certified sports agent at Beverly Hills Sports Council. Heisler represents Major League Baseball players
Document 11: Stuart Baird: Stuart Baird (born 30 November 1947) is an English film editor, producer, and director who is mainly associated with action films. He has edited over twenty major motion pictures.
Document 12: Leslie H. Martinson: Leslie Herbert "Les" Martinson (January 16, 1915 – September 3, 2016) was an American television and film director.
Document 13: Norman Taurog: Norman Rae Taurog (February 23, 1899 – April 7, 1981) was an American film director and screenwriter. From 1920 to 1968, Taurog directed 180 films. At the age of 32, he received the Academy Award for Best Director for "Skippy" (1931). He is the second youngest person ever to win the award after Damien Chazelle, who won for "La La Land" in 2017. He was later nominated for Best Director for the film "Boys Town" (1938). He directed some of the best-known actors of the twentieth century, including his nephew Jackie Cooper, Spencer Tracy, Mickey Rooney, Judy Garland, Deanna Durbin, Fred Astaire, Gene Kelly, Deborah Kerr, Peter Lawford, Dean Martin, Jerry Lewis, and Elvis Presley. Taurog directed six Martin and Lewis films, and nine Elvis Presley films, more than any other director. For his contribution to the motion picture industry, Norman Taurog has a star on the Hollywood Walk of Fame at 1600 Vine Street.
Document 14: Anthony Mann: Anthony Mann (June 30, 1906 – April 29, 1967) was an American actor and film director, most notably of films noir and Westerns. As a director, he often collaborated with the cinematographer John Alton and with actor James Stewart in his Westerns.
Document 15: Mel Stuart: Mel Stuart (born Stuart Solomon; September 2, 1928 – August 9, 2012) was an American film director and producer, who often worked with producer David L. Wolper, whose production firm he worked for 17 years, before going freelance.
ground_truth: television and film director