TASK DEFINITION: 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.
PROBLEM: Category: FUTURISTIC FILMS 
Clue: 1 of 2 races Rod Taylor meets circa 800,000 A.D. in "The Time Machine"

SOLUTION: elois

PROBLEM: Category: FOREIGN CURRENCY 
Clue: It's the currency used in Curacao

SOLUTION: dutch guilder

PROBLEM: Category: EUROPEAN AUTHORS 
Clue: Garcia Lorca wrote "Lament for a Bullfighter" in 1935, but a year later he was the lamented one in this war

SOLUTION:
the spanish civil war