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: PREHISTORIC TIMES 
Clue: The Stone Age lasted until this metal replaced stone as the primary tool-making material
answer:
bronze


question:
Category: ANIMAL PLANET? 
Clue: In gymnastics, it's safe to vault over; its body is upholstered
answer:
horse


question:
Category: GOOD SPORTS 
Clue: In 1997 this QB led the Packers to a 35-21 Super Bowl win vs. the Patriots; as of 2007, he was still their QB
answer:

brett favre