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: A DELICATE OPERATION 
Clue: A bypass operation may bypass the carotid or coronary one of these
answer:
artery


question:
Category: U.S. HISTORY 
Clue: The Cajuns migrated to Louisiana from there
answer:
nova scotia


question:
Category: SPORT OF KINGS 
Clue: The pari-mutuel system lets you do it legally
answer:

bet on horses