Question: Which director, Piers Haggard or Penelope Spheeris, is best known as a documentary film director whose works include the trilogy titled "The Decline of Western Civilization"?
Sentence (from "Warren Lewis (screenwriter)"): He is best known for his screenwriting contributions on the films "Black Rain" (1989, directed by Ridley Scott) and "The 13th Warrior" (1999, directed by John McTiernan).
Relevant evidence: No