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 are the majority of cases heard in the united states?

A: State courts
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Q: When does arrow season 6 air on tv?

A: October 12, 2017
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Q: When did ethanol start being added to gasoline?

A:
1908
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