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.

Category: NOTABLE NAMES 
Clue: This useful Englishman was known as the Father of Utilitarianism, & that works for me
jeremy bentham

Category: MATHEMATICS 
Clue: Term for the side of a right triangle that is opposite the 90° angle
hypoteneuse

Category: HATS 
Clue: In the 19th century this man's hat was known as the “hat that crowned the west”

stetson