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


question:
Category: THE CHIEFS 
Clue: He wrote 5 of the 85 "Federalist" essays
answer:
john jay


question:
Category: MOVIE MR. & MRS. 
Clue: In a 1992 movie, he played comic Buddy Young Jr., "Mr. Saturday Night"
answer:

billy crystal