Question: Which Harrison Ford film was directed by George Lucas before his success with Star Wars; American Graffiti, Dynasty, or The Conversation?
Sentence (from "American Graffiti"): American Graffiti is a 1973 American coming-of-age comedy-drama film directed and co-written by George Lucas starring Richard Dreyfuss, Ron Howard, Paul Le Mat, Harrison Ford, Charles Martin Smith, Cindy Williams, Candy Clark, Mackenzie Phillips, Bo Hopkins, and Wolfman Jack.
Relevant evidence: Yes