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 small child pushes a stroller down the street. Sentence 2: A small child holds onto a stroller.
answer:
A small child tips over a stroller.


question:
Sentence 1: A female bicyclist takes in the ocean view. Sentence 2: A woman rides a bike.
answer:
For whom the bell cracks up.


question:
Sentence 1: A young man sets up pool balls, on a purple felt billiard. Sentence 2: A young man is playing billiards.
answer:

A young man sets up pool balls, on a blue felt billiard.