instruction:
You are given a sentence and a question. You're expected to write the correct answer based on the sentence.
question:
Sentence: A hair brush experiences low resistance when slid across a porcelain tile compared to when it is slid across a throw rug. Question: Which surface will allow the hair brush to slide a greater distance?
answer:
porcelain tile


question:
Sentence: Suppose a Quarterback throws a football and a boxer throws a punch. Question: Which travels further?
answer:
Football


question:
Sentence: Bob is a human. Carl's a zombie. Carl is chasing Bob. Bob is sweating a lot. Carl would be sweating, but he's dead. Bob's pretty scared, and is running very, very quickly. Question: His shirt is drenched in sweat! Who's exercising more?
answer:

the human is exercising more