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: NORTH AMERICAN BIRDS 
Clue: This bird is known for its size (5 feet tall), its call (carries 2 miles) & its rarity; in 1941 there were only 21 in the wild

Ex Output:
the whooping crane


Ex Input:
Category: DEMOGRAPHICS 
Clue: In 2005 the World Health Organization appropriately decided to stop hiring people who do this

Ex Output:
smoke


Ex Input:
Category: GEOGRAPHY 
Clue: It's the only country whose name begins with "A", but doesn't end with "A"

Ex Output:

afghanistan