Question: What is the name of the visual effects supervisor and director notable for his work on the 2004 American action superhero film based on the DC Comics character and starring Halle Berry and Sharon Stone?
Sentence (from "John Knoll"): John Knoll (born October 6, 1962) is an American visual effects supervisor and chief creative officer (CCO) at Industrial Light & Magic (ILM).
Relevant evidence: No