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: Who presides over any impeachment trial of the president of the united states?

A: Chief Justice of the United States
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Q: Who does sam end up with in sixteen candles?

A: Jake Ryan
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Q: When did the berlin wall start being built?

A:
13 August 1961
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