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: When does the one tree hill theme song come back?

A: season 8
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Q: When did the last episode of seinfeld air?

A: May 14, 1998
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Q: Former world number one tennis player who coached roger federer in 2014?

A:
Stefan Bengt Edberg
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