TASK DEFINITION: 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.
PROBLEM: Sentence 1: A young man carrying a big bag of clothing is standing in an alley and talking on a cellphone. Sentence 2: Young man talking on cellphone

SOLUTION: An old man is jogging

PROBLEM: Sentence 1: A young woman shoots a gun at a target. Sentence 2: A target is shot by a woman.

SOLUTION: A woman fires a slingshot at a squirrel.

PROBLEM: Sentence 1: Young boy wearing jeans and a blue shirt playing with a dog. Sentence 2: The boy and the dog are together.

SOLUTION:
The boy is playing with his cat.