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: 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
chicago

Category: MYTHOLOGY BOOKS & AUTHORS 
Clue: In the 6th century B.C., Greeks used his "Iliad" & "Odyssey" as textbooks
homer

Category: WAR OF THE WORLDS 
Clue: Ray guns & speed bikes are no match for the Ewoks' sticks & stones in this film

return of the jedi