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.

Example Input: Category: U.S. RIVERS 
Clue: The Falls of Saint Anthony stop this mighty river from being navigable north of St. Paul, Minnesota
Example Output: the mississippi

Example Input: Category: THE FILM VAULT 
Clue: Sidney Poitier starred in the 1961 film version of this Lorraine Hansberry drama about a black Chicago family
Example Output: a raisin in the sun

Example Input: Category: LITERARY THRILLERS 
Clue: FBI agent Alex Cross tangles with villains known as the Wolf & the Weasel in his "London Bridges"
Example Output:
james patterson