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: THE CIVIL WAR 
Clue: A century before the U.S.S. Nautilus, the Confederacy had 2 of these new ships, the Pioneer  & the Hunley
[EX A]: submarines

[EX Q]: Category: FORBES' RICHEST PEOPLE 
Clue: Worth $53.5 billion, Carlos Slim, owner of Telmex, became the first person from this country to top the Forbes list
[EX A]: mexico

[EX Q]: Category: ROBERT DE NIRO MOVIES 
Clue: "Better to be king for a night than a schmuck for a lifetime"
[EX A]:
the king of comedy