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: FLAGS 
Clue: Christopher Columbus' flag bore a cross with their initials on either side

SOLUTION: ferdinand & isabella

PROBLEM: Category: 2 "Q"s 
Clue: This clue is really something, actually it's the French for "something"

SOLUTION: quelque chose

PROBLEM: Category: PLAYIN' WITH YOUR "HEAD" 
Clue: Nickname for a U.S. Marine, perhaps from the shape of his haircut

SOLUTION:
a jarhead