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: Where does the last name carson come from?

A: Scottish and Irish origin
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Q: The percentage of the inheritance of obesity that is accounted for by genetic factors is about?

A: 40–70%
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Q: The east african rift valleys are good examples of what type of plate boundary?

A:
divergent plate boundary
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