Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

Q: Who killed Lee harvey Oswald?

A: jack ruby
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Q: What was J.F.K. airport originally called?

A: idlewild
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Q: Callisto, Europa, Ganymede and Io are 4 of the 16 moons of which planet?

A:
jupiter
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