Question: Which American film director, producer, screenwriter co-founded Troma Entertainment film studio, Lloyd Kaufman or Joseph Ruben?
Sentence (from "Lloyd Kaufman"): With producer Michael Herz, he is the co-founder of Troma Entertainment film studio, and the director of many of their feature films, including "The Toxic Avenger" and "Tromeo and Juliet".
Relevant evidence: No