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: DOUBLE TALK 
Clue: In the 1920s Donald Duncan introduced this child's toy to America & it's had its ups & downs ever since

Ex Output:
yo-yo


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: HISTORIC DOCUMENTS 
Clue: In 1939 Albert Einstein wrote to Franklin Roosevelt urging development of this weapon

Ex Output:

the atomic bomb