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: ENGINEERING 
Clue: The motto of this 1904-1914 engineering project was "The land divided, the world united"
[EX A]: the panama canal

[EX Q]: Category: TRAVEL INDIANAPOLIS 
Clue: Union Station has a hotel that features these sleeping cars converted into hotel suites
[EX A]: pullman cars

[EX Q]: Category: ADD A LETTER 
Clue: This letter turns a pony into a flower
[EX A]:
e