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: STARRY NIGHT 
Clue: The helix nebula is in this constellation, whose "arm" holds 5 stars suggesting a water pitcher
[EX A]: aquarius

[EX Q]: Category: QUOTES 
Clue: 19th century philosopher & poet who advised "Hitch your wagon to a star"
[EX A]: ralph waldo emerson

[EX Q]: Category: ANCIENT HISTORY 
Clue: Archaeological digs showed that Pompeii, Stabiae & this neighbor were resort cities for wealthy Romans
[EX A]:
herculaneum