Question: Who was director of the 1996 film that was listed in the credits for Don Loren Harper?
Sentence (from "Don L. Harper"): Don Loren Harper is a Los Angeles-based film composer, songwriter, conductor, and arranger whose credits include films such as "The Guardian", "National Treasure", "Training Day", "Armageddon", "The Rock", "Twister", "Broken Arrow", "Assassins", and "Speed".
Relevant evidence: Yes