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: RARITIES 
Clue: All 6 examples of his signature known to exist date from between 1612 & 1616
[EX A]: william shakespeare

[EX Q]: Category: U.S. PRESIDENTS 
Clue: During his tenure, he never threw out an opening day first pitch, but before he was president, he did it for the Braves
[EX A]: jimmy carter

[EX Q]: Category: FAMOUS NOVELS 
Clue: Chapter XVI of this novel concerns "The Inn Which He Took for a Castle"
[EX A]:
\"don quixote\"