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: SUN 
Clue: In the main reaction making the sun's energy, 2 of these nuclear particles fuse & one becomes a neutron

Output: protons


Input: Consider Input: Category: THE NUDE IN ART 
Clue: People said his male nude "The Age of Bronze" was so lifelike, he must have made casts from live models

Output: auguste rodin


Input: Consider Input: Category: TRAVEL & TOURISM 
Clue: Type of place you'd be visiting if you were in Wind Cave, Lassen or Zion


Output: a national park