Question: Metro-Goldwyn-Mayer contract star Arlene Dahl starred in the film "Ambush" in 1950, which was based on a story of the same name written by who?

full_context: Document 1: Pamela Hensley: Pamela Hensley (born October 3, 1950) is an American actress and author. She is best known for playing Princess Ardala on the 1979–1981 television series "Buck Rogers in the 25th Century" and C.J. Parsons on the 1982–1985 television series "Matt Houston".
Document 2: Russell S. Hughes: Russell S. Hughes (January 15, 1910 – April 16, 1958) was a screenwriter of movies such as "Them!"; "Thunder Over the Plains" with Randolph Scott; Anthony Mann's "The Last Frontier" with Victor Mature and Robert Preston; "Yellow Mountain" with Mala Powers; "Jubal" with Ernest Borgnine and Rod Steiger; and a host of others and a variety of episodes for television series including "Maverick" episodes "According to Hoyle" and "The Seventh Hand," both featuring James Garner as Bret Maverick and Diane Brewster as Samantha Crawford, as well as "The Burning Sky" and Robert Louis Stevenson's "The Wrecker." Other series include "Perry Mason" with Raymond Burr, "Zane Grey Theater", and both the movie "Sugarfoot" with Randolph Scott and the unrelated TV series "Sugarfoot".
Document 3: Ambush (1950 film): Ambush is a 1950 western film directed by Sam Wood and starring Robert Taylor, John Hodiak and Arlene Dahl. This was the last film directed by Sam Wood. The plot is based on the serial story "Ambush" by Luke Short in "The Saturday Evening Post" (25 Dec 1948–12 Feb 1949).
Document 4: Taryn Power: Taryn Stephanie Power (born September 13, 1953) is an American actress and the younger daughter of the actor Tyrone Power and his second wife, Mexican actress Linda Christian.
Document 5: Arlene Dahl: Arlene Carol Dahl (born August 11, 1925) is an American actress and former Metro-Goldwyn-Mayer contract star, who achieved notability during the 1950s. She has three children, the eldest of whom is actor Lorenzo Lamas.
Document 6: Elizabeth Taylor: Dame Elizabeth Rosemond Taylor, DBE (February 27, 1932 – March 23, 2011) was a British-American actress, businesswoman, and humanitarian. She began her career as a child actress in the early 1940s, and was one of the most popular stars of classical Hollywood cinema in the 1950s. She continued her career successfully into the 1960s, and remained a well known public figure for the rest of her life. In 1999, the American Film Institute named her the seventh-greatest female screen legend.
Document 7: Wagon Master: Wagon Master is a 1950 Western film about a Mormon pioneer wagon train to the San Juan River in Utah. The film was conceived, produced, and directed by John Ford, who is often listed among the greatest film directors. The film stars Ben Johnson, Harry Carey Jr., Joanne Dru, and Ward Bond. "Wagon Master" inspired the US television series "Wagon Train" (1957–1965), which starred Ward Bond until his death in 1960. The film was a personal favorite of Ford himself, who told Peter Bogdanovich in 1967 that "Along with "The Fugitive" and "The Sun Shines Bright", "Wagon Master" came closest to being what I wanted to achieve." While the critical and audience response to "Wagon Master" was lukewarm on its release, over the years several critics have come to view it as one of Ford's masterpieces.
Document 8: The Ambushers (film): The Ambushers is a 1967 spy comedy film filmed in Acapulco starring Dean Martin, Senta Berger and Janice Rule. It is loosely based upon the novel of the same name by Donald Hamilton as well as "The Menacers" that featured UFOs and a Mexican setting. When a government-built flying saucer is hijacked mid-flight by Jose Ortega, the exiled ruler for an outlaw nation, secret agent Matt Helm and the ship's former pilot Sheila Sommers are sent to recover it.
Document 9: Winchester '73: Winchester '73 is a 1950 American Western film directed by Anthony Mann starring James Stewart, Shelley Winters, Dan Duryea and Stephen McNally. Written by Borden Chase and Robert L. Richards, the film is about the journey of a prized rifle from one ill-fated owner to another and a cowboy's search for a murderous fugitive. The movie features early film performances by Rock Hudson as an American Indian, Tony Curtis, and James Best. The film received a Writers Guild of America Award nomination for Best Written American Western. This is the first Western film collaboration between Anthony Mann and James Stewart. It was filmed in black and white.
Document 10: The Last Wagon (1956 film): The Last Wagon is a 1956 western film starring Richard Widmark. It was co-written and directed by Delmer Daves and tells a story set during the American Indian Wars: the survivors of an Indian massacre must rely on a man wanted for several murders to lead them out of danger.
Document 11: Laraine Day: Laraine Day (October 13, 1920 – November 10, 2007) was an American actress and a former Metro-Goldwyn-Mayer contract star. As a leading lady in her day, she was paired opposite major film stars including Lana Turner, Cary Grant, and John Wayne.
Document 12: Linda Darnell: Linda Darnell (born Monetta Eloyse Darnell, October 16, 1923April 10, 1965) was an American film actress. Darnell progressed from modeling as a child to acting in theater and film as an adolescent. At the encouragement of her mother, she made her first film in 1939, and appeared in supporting roles in big-budget films for 20th Century Fox throughout the 1940s. She rose to fame with co-starring roles opposite Tyrone Power in adventure films, and established a main character career after her role in "Forever Amber" (1947). She won critical acclaim for her work in "Unfaithfully Yours" (1948) and "A Letter to Three Wives" (1949).
Document 13: Arlene Francis: Arlene Francis (born Arline Francis Kazanjian; October 20, 1907 – May 31, 2001) was an American actress, radio and television talk show host, and game show panelist. She is known for her long-standing role as a panelist on the television game show " What's My Line?", on which she regularly appeared for 25 years, from 1950 through the mid-1970s, on both the network and syndicated versions of the show.
Document 14: The Last Outpost (1951 film): The Last Outpost is a 1951 Technicolor film Western directed by Lewis R. Foster, set in the American Civil War with brothers on opposite sides. The cast includes Ronald Reagan.
Document 15: Pier Angeli: Pier Angeli (19 June 193210 September 1971) was an Italian-born television and film actress. Her American cinematographic debut was in the starring role of the 1951 film "Teresa", for which she won a Golden Globe Award for Young Star of the Year - Actress. She had one son with her first husband, Vic Damone, and another son with her second husband, Armando Trovajoli.
ground_truth: Luke Short