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 consistency, answers should be in all lower cased letters.

Category: SPORTS RULES, MAN! 
Clue: In this track & field event, a 45-meter-long runway can front a 9-meter-long moistened sandpit
long jump

Category: 3-LETTER WORDS 
Clue: For 5 & 7 it's 12
sum

Category: VOCABULARY 
Clue: The name of this continent may come from the word Ereb, meaning “land of the setting sun”

europe