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: 20th CENTURY AUTHORS 
Clue: A novel set during the Depression earned this author a 1940 Pulitzer Prize & contributed to him winning a Nobel Prize in 1962
[EX A]: john steinbeck

[EX Q]: Category: U.S. PRESIDENTS 
Clue: He was the last man elected president who had served as a U.S. Senator
[EX A]: richard m. nixon

[EX Q]: Category: HIT SONGS 
Clue: Inspired by a Meher Baba saying, this 1980s Grammy winner was the first a cappella recording to top the Billboard 100
[EX A]:
\"don\'t worry, be happy\"