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: WE HAVE THE TECHNOLOGY 
Clue: Smile!  In 1888 this American introduced the first simple consumer camera to use roll film
[EX A]: eastman

[EX Q]: Category: POP CULTURE 
Clue: Neil Diamond's 1982 hit "Heartlight" was inspired by this movie
[EX A]: e.t.

[EX Q]: Category: CITY OF THE DAY: SAN FRANCISCO 
Clue: An elaborate 1915 San Francisco expo celebrated the completion of this, which made it much easier to sail to the city
[EX A]:
the panama canal