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.

Example Input: Category: BESTSELLERS 
Clue: In the beginning this 2005 novel was simply titled "Forks"
Example Output: twilight

Example Input: Category: SKYSCRAPERS 
Clue: After a construction boom fueled by oil & gas money, this capital city now has Europe's tallest building
Example Output: moscow

Example 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
Example Output:
the whooping crane