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: BIBLE MOVIES 
Clue: Set during Nero's reign, this film's title is a line uttered by Peter to Jesus & means "Where are you going?"
quo vadis

Category: 19th CENTURY BUSINESSMEN 
Clue: In 1873 he founded the J. Edgar Thomson works near Pittsburgh, naming the steel mill for the Penn. railroad president
carnegie

Category: "TRIC"s 
Clue: Adjective meaning corresponding in size & shape on opposite sides of a dividing line or plane

symmetric or symmetrical