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: FRENCH CLASS 
Clue: If you approach the signal called feu rouge on a French road, you'd better do this
answer:
stop


question:
Category: AMERICAN LITERATURE 
Clue: Thomas Pynchon followed "V" with this novel about the V-2 rocket
answer:
gravity\'s rainbow


question:
Category: AIRPORTS 
Clue: It's airport code, ORD, comes from Orchard Field, the airport previously on the site
answer:

o\'hare