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.

Example Input: Sentence 1: A young Asian boy running with a white and gray dog on green grass. Sentence 2: A boy and his dog are outside.
Example Output: The boy is giving his dog a bath.

Example Input: Sentence 1: People crowd a smoky street. Sentence 2: People gathered outside
Example Output: A single person sitting in their bed

Example Input: Sentence 1: A man in a green shirt is holding a piece of paper and making a gesture with his hand. Sentence 2: The man is making a gesture.
Example Output:
The man had both of his hands amputated.