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: What president is named in the theme song to all in the family?

Answer: Herbert Hoover


Question: Who has the most championship in the nfl?

Answer: Green Bay Packers


Question: When does the mlb regular season start in 2018?

Answer:
Opening Day, March 29