Question: Robert Mackenzie is an Australian supervising sound editor, he is known for which critically acclaimed biographical war-drama film, directed by Mel Gibson and written by Andrew Knight and Robert Schenkkan?
Sentence (from "Hacksaw Ridge"): Hacksaw Ridge is a 2016 biographical war drama film directed by Mel Gibson and written by Andrew Knight and Robert Schenkkan, based on the 2004 documentary "The Conscientious Objector".
Relevant evidence: Yes