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 published the moscow mathematical papyrus in 1930?

A: Struve, Vasilij Vasil'evič, and Boris Turaev
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Q: When does the rpdr season 9 finale air?

A: June 23, 2017
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Q: Who was the president of the united states in 1900?

A:
William McKinley
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