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"): Lionel Barrymore (born Lionel Herbert Blythe; April 28, 1878 – November 15, 1954) was an American actor of stage, screen and radio as well as a film director.
Relevant evidence: No