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 simplicity, answers should be in all lower cased letters.
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Question: Category: TICKLE THE IVORIES 
Clue: The Bible says this wise king's ships went to Tarshish to bring back "gold, and silver, ivory, and apes, and peacocks"

Answer: solomon


Question: Category: HI, I "Q" 
Clue: It's a synonym for idiosyncrasy

Answer: quirk


Question: Category: CAR TALK 
Clue: This converter reduces the level of harmful pollutants in a car's exhaust

Answer:
a catalytic converter