Definition: You are given an open-domain question from an open movie database. Your task is to provide an answer to that question. Try to only include the answer. Do not put it in a sentence.
Input: what films was Walon Green a writer on?

Eraser, The Wild Bunch, RoboCop 2, Sorcerer, The Border, The Hi-Lo Country, Solarbabies, The Brink's Job, Without Warning