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.

Q: Category: ART 
Clue: Medieval artists gave triangular ones to the trinity, round to the angels & rectangular to living holy people

A: halos
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Q: Category: PREPOSITIONAL PHRASES 
Clue: This Bob Seger song gained commercial popularity in Chevy truck ads

A: "like a rock"
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Q: Category: HUMANITARIANS 
Clue: He used some of his enormous wealth to build a New York City concert hall & over 2,500 public libraries

A:
andrew carnegie
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