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: AMERICAN ART & ARTISTS 
Clue: Roy Lichtenstein perfected his technique for simulating benday dots to mimic the artwork found in these "strips"

Output: comic strips


Input: Consider Input: Category: "HARD" QUESTIONS 
Clue: Stubborn

Output: hard-headed


Input: Consider Input: Category: MILITARY HISTORY 
Clue: The largest horde this Mongol leader who died in 1227 ever assembled was less than 240,000 men


Output: genghis khan