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.

Input: Consider Input: Category: HEAVY MACHINERY 
Clue: By definition it's a machine that gives a surface an even degree of slope

Output: grader


Input: Consider Input: Category: RAIDERS 
Clue: John J. Pershing's attempts to stop this Mexican raider included the U.S. cavalry's "last charge"

Output: pancho villa


Input: Consider Input: Category: CRITTER LIT 
Clue: A spider named Charlotte & a farmer's daughter keep the farmer from makin' bacon out of this pig


Output: wilbur