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: small long-haired child trying to clean a window. Sentence 2: A small child is trying to clean the window.
Example Output: The toddler is licking the window with his tongue.

Example Input: 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
Example Output: A group of people riding motorcycles down a hill.

Example Input: Sentence 1: Two men without shirts are washing a roof. Sentence 2: Two men are washing a roof.
Example Output:
Three men are washing windows.