instruction:
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.
question:
Category: ART 
Clue: Medieval artists gave triangular ones to the trinity, round to the angels & rectangular to living holy people
answer:
halos


question:
Category: REMEMBRANCE OF THINGS "CAST" 
Clue: Hey, baby, you a Gemini?  These twin brothers of Helen of Troy are, literally
answer:
castor & pollux


question:
Category: ANIMAL SUBTRACTION 
Clue: Subtract a letter from this South American ruminant & you get a Buddhist monk
answer:

a llama