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 consistency, answers should be in all lower cased letters.

Category: LITERATURE 
Clue: George Du Maurier introduced this evil hypnotist in his 1894 novel "Trilby"
svengali

Category: WHO'S AFRAID OF 
Clue: Whether it passes too slowly or too quickly, chronophobia is a fear of this
time

Category: GOT YOUR GOAT 
Clue: Goat Island separates the 2 waterfalls that make up this much larger one

niagara falls