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: I HEAR A SYMPHONY 
Clue: Mozart's 38th is called by the name of this city that stood in for Vienna in the filming of "Amadeus"
answer:
prague


question:
Category: FROM B TO C 
Clue: A group of nations acting together, like the old Soviet one
answer:
bloc


question:
Category: OXYMORONS 
Clue: Completes the Shakespeare line "Good Night, Good Night!  Parting is such..."
answer:

sweet sorrow