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.

Input: Consider Input: Category: "T.W." 
Clue: You might have learned to ride your bike with the help of these attachments

Output: training wheels


Input: Consider Input: Category: ON THE COVER OF ROLLING STONE 
Clue: "Nothing Compares" to this singer seen on covers in 1990 & '91, & with even less hair in '92

Output: sinead o\'connor


Input: Consider Input: Category: BALLET 
Clue: This Christmas ballet is based on a story by E.T.A. Hoffmann


Output: the nutcracker