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: DIMENSIONS 
Clue: Don't lose the thread--there are 10 or so dimensions in this physics theory

SOLUTION: string theory

PROBLEM: Category: THE 10 LARGEST COUNTRIES IN THE WORLD 
Clue: The one that spans 11 time zones

SOLUTION: russia

PROBLEM: Category: WORLD CAPITALS 
Clue: Among the parks in this Costa Rican capital are Morazan Park, Bolivar Park & John. F. Kennedy Park

SOLUTION:
san jose