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.

Example Input: Category: FULL "MOON" 
Clue: Mercer & Mancini composed this 1961 classic
Example Output: "moon river"

Example Input: Category: MATH & SCIENCE 
Clue: Around 1850 George Boole devised a new take on this branch of math
Example Output: algebra

Example Input: Category: BALLET 
Clue: George Balanchine created 10 ballets for this impresario's Ballets Russes
Example Output:
sergei diaghilev