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


question:
Category: WHAT'S COOKIN'? 
Clue: You can find this celebrity chef's pizzas at his Spago Restaurant, or frozen at the grocery store
answer:
wolfgang puck


question:
Category: MY PEPYS 
Clue: Celebrated for his diary, Samuel Pepys was born on Feb. 23, 1633 in this world capital
answer:

london