Question: Which film director and screenwriter, André Berthomieu or Derek Yee, was formally an actor?
Sentence (from "Derek Yee"): Derek Yee Tung-sing (), born in 1957, is a former Shaw Brothers actor from Hong Kong, currently a film director and screenwriter, who has achieved fame and respect in Hong Kong and international film festival circuits for treading carefully commercial viability concerns with artistic integrity.
Relevant evidence: Yes