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.

[EX Q]: Category: EARLY ART 
Clue: This art form of setting stones or glass into mortar was the main decorative art of the Byzantine Empire
[EX A]: mosaic

[EX Q]: Category: POETRY 
Clue: Completes Omar Khayyam's threesome, "Jug of wine, a loaf of bread -- and"
[EX A]: "thou"

[EX Q]: Category: "E"-BOOKS 
Clue: This novel by Sinclair Lewis is a satiric indictment of fundamentalist religion
[EX A]:
elmer gantry