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.

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

Output: elois


Input: Consider Input: Category: RULERS 
Clue: In 770 this king of the Franks married Desiderata, daughter of the Lombard king Desiderius

Output: charlemagne


Input: Consider Input: Category: FUN WITH OPERA 
Clue: Of all the operas we know, this 1893 work based on a Grimm role has the most gingerbread in it


Output: hansel and gretel