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 Q]: Category: DIMENSIONS 
Clue: Don't lose the thread--there are 10 or so dimensions in this physics theory
[EX A]: string theory

[EX Q]: Category: NOVELISTS 
Clue: This novelist's youthful voyages provided the basis for such works as "Lord Jim" & "Typhoon"
[EX A]: conrad

[EX Q]: Category: TEEN MOZART 
Clue: From age 19 comes "Il re pastore", in which one of these rural workers becomes a king
[EX A]:
a shepherd