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.

Ex Input:
Category: FICTIONAL DETECTIVES 
Clue: "The House Without a Key" was the first case solved by this Chinese detective

Ex Output:
charlie chan


Ex Input:
Category: WORLD CAPITALS 
Clue: This capital city of 113,000 is the closest national capital to the Arctic Circle

Ex Output:
reykjavík


Ex Input:
Category: OPTICS 
Clue: Made of bronze in Biblical times, today they're often glass with a backing of a silver solution

Ex Output:

mirrors