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: MARK ANTONYMS 
Clue: The traditional mark of someone who can't sign his name has this opposite in tic-tac-toe
answer:
o


question:
Category: '50s TV 
Clue: Back in 1956, Philip Carey of "One Life to Live" was one of the 77th Bengal Lancers in a series set in this country
answer:
india


question:
Category: OPERA 
Clue: Act I of this opera ends with a love duet between Roddolfo & Mimi
answer:

la bohème