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.

Ex Input:
Category: CLASSICAL MUSIC 
Clue: Mendelssohn's "Songs without Words" were once the most popular pieces for this instrument

Ex Output:
piano


Ex Input:
Category: HOSPITALS 
Clue: The Cleveland Clinic tops U.S. News' 1996 ranking of hospitals in this, the study of the heart

Ex Output:
cardiology


Ex Input:
Category: POTPOURRI 
Clue: December 1997 saw the 2 millionth one of these in California:  "THINICE"

Ex Output:

vanity/personalized license plate