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: EYE 
Clue: Situated at the outside corner of each eye, these glands secrete a salty solution for lubrication
lacrimal glands

Category: ANCIENT TIMES 
Clue: Julius Caesar said this region was divided into 3 parts; Augustus divided it into 4, including Aquitania
gaul

Category: FOOD BRANDS 
Clue: Kraft introduced this brand of processed cheese way back in 1928

velveeta