TASK DEFINITION: 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.
PROBLEM: Category: MATHLETES 
Clue: John Nash has a beautiful mind that contributed to this "theory" of strategic decision making

SOLUTION: game theory

PROBLEM: Category: BROADWAY DEBUTS 
Clue: In 2006, in her first big project since giving birth to twins, she starred on Broadway in "Three Days of Rain"

SOLUTION: julia roberts

PROBLEM: Category: TRANSFORMERS 
Clue: This villain of Lemony Snicket's "A Series of Unfortunate Events" has many disguises

SOLUTION:
count olaf