Question: Who is the director of the 1996 American science fiction Western film in which the actress who played Kelly Gaines on "Cheers" stars?
Sentence (from "Back to the Future Part III"): The film continues immediately following "Back to the Future Part II" (1989); while stranded in 1955 during his time travel adventures, Marty McFly (Fox) discovers that his friend Dr. Emmett "Doc" Brown, trapped in 1885, was killed by Biff Tannen's great-grandfather Buford.
Relevant evidence: No