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: SPORTING EVENTS 
Clue: The cup presented since 1887 to the man who wins this is inscribed "single handed champion of the world"

SOLUTION: wimbledon

PROBLEM: Category: ASTRONOMER'S DICTIONARY 
Clue: This word comes from a Greek phrase meaning "circle of animals"

SOLUTION: zodiac

PROBLEM: Category: OLYMPICS HISTORY 
Clue: In 1988 this country boycotted the Summer Olympics after its demand to co-host the games was refused

SOLUTION:
north korea