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: MILITARY MATTERS 
Clue: Major Esterhazy was probably the real spy for the Germans in this French "affair" that began in 1894
Example Output: dreyfus affair

Example Input: Category: A WALK ACROSS THE CHARLES BRIDGE 
Clue: Originally called Stone Bridge, the Charles Bridge was built with this "stone", like the walls of the White House
Example Output: sandstone

Example Input: Category: ANOTHER ONE BITES THE "UST" 
Clue: Feral horse of the American plains
Example Output:
mustang