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.

[EX Q]: Category: LARGE EQUIPMENT 
Clue: For smooth travel, ballast tampers & ballast regulators keep the gravel at the right level among these
[EX A]: railroad tracks

[EX Q]: Category: BRONX CHEER 
Clue: It's where you can explore Jungle World & the Himalayan Highlands without ever leaving New York
[EX A]: bronx zoo

[EX Q]: Category: CANADA, "A"? 
Clue: Once part of Alcoa, this Canadian company with a 5-letter name is a giant in world aluminum manufacturing
[EX A]:
alcan