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: MATHLETES 
Clue: John Nash has a beautiful mind that contributed to this "theory" of strategic decision making
[EX A]: game theory

[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: 5 GUYS NAMED MOE 
Clue: Major league catcher Moe Berg was also a WWII spy for this agency, precursor of the CIA
[EX A]:
oss