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.

Q: What year is c in a vin number?

A: 1982, 2012
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Q: How did will smith lose his arm in irobot?

A: a car crash
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Q: Where does most of earths oxygen come from today?

A:
photosynthesis
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