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 winner of americas got talent 2016?

Answer: Grace VanderWaal


Question: When did nigeria become a federation of 19 states?

Answer: 1976


Question: When did time magazine start person of the year?

Answer:
1927