Question: National Lampoon's Christmas Vacation is a film that stars an actor known for playing Dr. Leonard Hofstadter in what CBS sitcom?
Sentence (from "Lionel Barrymore"): He won an Academy Award for Best Actor for his performance in "A Free Soul" (1931), and remains best known to modern audiences for the role of the villainous Mr. Potter character in Frank Capra's 1946 film "It's a Wonderful Life".
Relevant evidence: No