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: THE QUOTABLE EINSTEIN 
Clue: This "is more important than knowledge"

SOLUTION: imagination

PROBLEM: Category: PLACES FOR ANIMALS 
Clue: This word refers to extreme opposites or a type of bear

SOLUTION: polar

PROBLEM: Category: LONDON'S CITY GUILDS 
Clue: Loriners make hardware for this genteel sport a little "bit" at a time

SOLUTION:
polo