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 group of people wearing yellow shirts, with one woman wearing an orange tank top, biking on stationary bikes. Sentence 2: A group of people are on stationary bikes
answer:
A group of people riding motorcycles down a hill.


question:
Sentence 1: A group of ladies walk down a busy sidewalk. Sentence 2: A group of people walk on a sidewalk.
answer:
A group of women lead a riot.


question:
Sentence 1: Guy in a striped shirt, sitting in front of two computer screens. Sentence 2: A guy without shirt, sitting in front of two computer screens
answer:

A guy getting ready to swim in the swimming pool