instruction:
In this task, you're given a pair of sentences, sentence 1 and sentence 2, that agree with each other. Your job is to alter sentence 2 so that the pair contradict each other. Generated sentences must be short, with less than 15 words. New information can be introduced. Avoid using pronouns to confuse the subject of the sentence.
question:
Sentence 1: A man in a black shirt and gray hat gives the thumbs up to a crowd with one hand, while holding a microphone in the other. Sentence 2: a man gives a thumbs up
answer:
a loan man on a horse


question:
Sentence 1: A child is sliding down a hill on a sled. Sentence 2: The child was outdoors.
answer:
A child is sliding up a hill on a sled.


question:
Sentence 1: A tight crowd of bicyclers make a sharp turn in a race. Sentence 2: A group of people are racing each other.
answer:

A crowd of people are riding skate boards.