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.
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Question: Who was the first president who lived in the white house?

Answer: John Adams


Question: Who was the first saiyan to fight goku?

Answer: Raditz


Question: Who was the 20th prime minister of canada?

Answer:
Jean Chretien