question: Which actor starred in "Kiss of Death" (1947), "One Million B.C." (1940), as well as "My Darling Clementine" (1946?
answer: Victor Mature
context: Title: Dorothy Spencer
  Passage: Dorothy Spencer (February 3, 1909 – May 23, 2002) was an American film editor with seventy-five feature film credits from a career than spanned more than 50 years.  Nominated for the Academy Award for Best Film Editing on four occasions, she is remembered for editing three of director John Ford's best known movies, including "Stagecoach" (1939) and "My Darling Clementine" (1946), which film critic Roger Ebert called "Ford's greatest Western".
  Title: Frontier Marshal (1934 film)
  Passage: Frontier Marshal is a 1934 American Pre-Code Western film directed by Lewis Seiler and starring George O'Brien.  Produced by Fox Film and Sol M. Wurtzel, the film is the first based on Stuart N. Lake's enormously popular but largely fictitious "biography" of Wyatt Earp, "".  A second version of the film, also produced by Wurtzel, was made in 1939, and a third interpretation by John Ford entitled "My Darling Clementine" was released in 1946.
  Title: My Darling Clementine
  Passage: My Darling Clementine is a 1946 American Western film directed by John Ford and starring Henry Fonda as Wyatt Earp during the period leading up to the gunfight at the OK Corral.  The ensemble cast also features Victor Mature (as Doc Holliday), Linda Darnell, Walter Brennan, Tim Holt, Cathy Downs and Ward Bond.
  Title: One Million Years B.C.
  Passage: One Million Years B.C. is a 1966 British adventure/fantasy film starring Raquel Welch and John Richardson, set in a fictional age of cavemen and dinosaurs.  The film was made by Hammer Film Productions and Seven Arts, and is a remake of the Hollywood film "One Million B.C." (1940).  It recreates many of the scenes of the earlier film, such as an "Allosaurus" attacking a child in a tree.  Location scenes were filmed on the Canary Islands in the middle of winter, in late 1965.  The British release prints of this film were printed in dye transfer Technicolor.  The US version was cut by 9 minutes, printed in DeLuxe Color, and released in 1967.
  Title: Victor Mature
  Passage: Victor John Mature (January 29, 1913 – August 4, 1999) was an American stage, film, and television actor who starred most notably in several Biblical movies during the 1950s, and was known for his dark good looks and mega-watt smile.  His best known film roles include "One Million B.C." (1940), "My Darling Clementine" (1946), "Kiss of Death" (1947), "Samson and Delilah" (1949), and "The Robe" (1953).  He also appeared in a large number of musicals opposite such stars as Rita Hayworth and Betty Grable.
  Title: Kiss of Death (1947 film)
  Passage: Kiss of Death is a 1947 film noir directed by Henry Hathaway and written by Ben Hecht and Charles Lederer from a story by Eleazar Lipsky.  The story revolves around an ex-con played by Victor Mature and his former partner-in-crime, Tommy Udo (Richard Widmark in his first film).  The movie also starred Brian Donlevy and introduced Coleen Gray in her first billed role.  The film has received critical praise since its release, with two Academy Award nominations.
  Title: Clementine (nuclear reactor)
  Passage: Clementine was the code name for the world's first fast-neutron reactor.  It was an experimental-scale reactor.  The maximum output was 25 kW and was fueled by plutonium and cooled by liquid mercury.  Clementine was located at Los Alamos National Laboratory in Los Alamos, New Mexico.  Clementine was designed and built in 1945–1946 and first achieved criticality in 1946 and full power in 1949.  The reactor was named after the song "Oh My Darling, Clementine."  The similarities to the song were that the reactor was located in a deep canyon and the reactor operators were 49'ers, as 49 (last digits of element 94, isotope 239) was one of the code names for plutonium at the time.
citations: Kiss of Death (1947 film) Victor Mature