instruction:
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.
question:
Category: HERE'S TO WATER 
Clue: This city's water treatment plant, the world's largest, lies on a 61-acre peninsula that extends into Lake Michigan
answer:
chicago


question:
Category: THE HECUBA, YOU SAY 
Clue: Hecuba lays a guilt trip on this eldest son for going into his final combat
answer:
hector


question:
Category: FUN WITH DINOSAURS 
Clue: In 1902 in Montana, paleontologist Barnum Brown unearthed the first specimen of this dinosaur "king"
answer:

a t. rex