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: CLOTHING 
Clue: They can be crew, knee, or bobby

SOLUTION: socks

PROBLEM: Category: FROM B TO C 
Clue: A group of nations acting together, like the old Soviet one

SOLUTION: bloc

PROBLEM: Category: FUNNY HATS 
Clue: The name of this often brimless hat, popular in the 1920s, is French for "bell", after the shape of the hat

SOLUTION:
a cloche