You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.
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Question: Category: TIME TO "D"ECIDE
Clue: It's a joke that doesn't get a laugh, or an explosive that fails to detonate

Answer: dud

Question: Category: BEFORE & AFTER
Clue: The one-time flying nun who lands on a magical baseball diamond on your farm

Answer: sally field of dreams

Question: Category: THE PERIODIC TABLE
Clue: Element No. 61, it's named for a mythical stealer of fire

Answer:
prometheum