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 boy in a white dress shirt is playing on a grassy plain. Sentence 2: A young person in a white dress shirt is playing on a grassy plain.
Example Output: A young girl in a white dress shirt is playing on a grassy plain.

Example Input: Sentence 1: A group of ladies walk down a busy sidewalk. Sentence 2: A group of people walk on a sidewalk.
Example Output: A group of women lead a riot.

Example Input: Sentence 1: A woman in a red shirt with her arm raised. Sentence 2: A woman raising her arm.
Example Output:
A man standing in a blue shirt.