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.

Input: Consider Input: Category: TO REMAIN "SILENT" 
Clue: Quiet alliterative nickname of the U.S. Navy's submarine fleet

Output: the silent service


Input: Consider Input: Category: SAME FIRST & LAST LETTER 
Clue: An invisible emanation, or an intangible quality

Output: aura


Input: Consider Input: Category: OH, DANNY BOY 
Clue: In 1971 he gave us the "HIstory of U.S. Decision-Making Process on Viet Nam Policy", a 47-volume study, to the New York Times


Output: daniel ellsberg