In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.
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Question: When was the last time the us constitution changed?

Answer: May 5, 1992


Question: Who wrote sitting by the dock of the bay?

Answer: Otis Redding and Steve Cropper


Question: Who does dakota johnson play in 50 shades of grey?

Answer:
Anastasia Steele