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: SPORTS AUTOBIOGRAPHIES 
Clue: This coach's book is all "Tark"
answer:
jerry tarkanian


question:
Category: MONEY & FINANCE 
Clue: When stocks are in an upward trend, it's a bull market; as they drop, it's called this
answer:
bear market


question:
Category: RIVERS 
Clue: In 1951 it was determined that this river's source was in the Sierra Parima of Venezuela
answer:

the orinoco