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: AMERICAN CITIES 
Clue: 6 of the top 10 U.S. cities in population are found in these 2 states
Example Output: california & texas

Example Input: Category: HISTORIC BOOKS 
Clue: It was written in 1924 in the fortress of Landsberg am Lech
Example Output: mein kampf by adolf hitler

Example Input: Category: U.S. HISTORY 
Clue: Frank Harris' 1908 novel "The Bomb" deals with this 1886 U.S. incident
Example Output:
the haymarket riot