TASK DEFINITION: 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 consistency, answers should be in all lower cased letters.
PROBLEM: Category: 3-LETTER WORDS 
Clue: For 5 & 7 it's 12

SOLUTION: sum

PROBLEM: Category: CHEESY COUNTRIES 
Clue: Asiago

SOLUTION: italy

PROBLEM: Category: MUSICAL INSTRUMENTS 
Clue: Jascha Heifetz taught a master class on this instrument at USC

SOLUTION:
the violin