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.
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Question: who is the director that directed Dark City?

Answer: William Dieterle


Question: who's the writer of Prison?

Answer: Ingmar Bergman


Question: who directed the movie Rumor Has It...?

Answer:
Rob Reiner