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.

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


[Q]: Category: CONFUSE US 
Clue: Affluent means wealthy: effluent refers to waste in this state of matter
[A]: liquid


[Q]: Category: SONGS OF THE '60S 
Clue: Louis Armstrong's only No. 1 hit, it hit the charts for 19 weeks in 1964
[A]:
"hello, dolly!"