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: ANATOMY 
Clue: Organ whose workings were the subject of a 1604 work by Johannes Kepler
answer:
the eye


question:
Category: CABLE TELEVISION 
Clue: 2002's "A Season on the Brink" was this cable network's first original movie
answer:
espn/espn2


question:
Category: NONFICTION 
Clue: In 1947 editor William Styron said this book was a long, "tedious Pacific voyage best suited" for National Geographic
answer:

kon-tiki