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.

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

Example Input: Category: THIS "BUD"'S FOR YOU 
Clue: It's the practice of pairing swimmers, with each responsible for the other's safety
Example Output: the buddy system

Example Input: Category: FAMILIAR PHRASES 
Clue: The future is inevitable, at least according to this phrase translated from the Latin "iacta alea est"
Example Output:
the die is cast