Problem: How many checkers (pieces) does each player start with in a game of backgammon?
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A: fifteen

Problem: On which island is the city of Nagasaki in Japan?
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A: kyushu

Problem: Which play by Arthur Miller used events from early US history to mirror Senator McCarthy's communist witch hunts in the 1950's?
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A: crucible

Problem: What is the most common element in the Universe?
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A:
hydrogen