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: WORLD HISTORY 
Clue: He completed vols. 2 & 3 of Karl Marx's "Das Kapital"
Example Output: friedrich engels

Example Input: Category: BLASTS FROM THE PAST 
Clue: Many treasures have been excavated from this royal valley (in Egypt)
Example Output: valley of the kings

Example Input: Category: PRESIDENTIAL FACIAL HAIR 
Clue: President Lincoln's beard was fuller than that of this Confederate counterpart
Example Output:
jefferson davis