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 dog running on the sand. Sentence 2: a dog is running on sand
Example Output: a dog is playing with sheep in a grass field

Example Input: Sentence 1: A race car spins on the track. Sentence 2: A race car crashes.
Example Output: A race car takes the lead!

Example Input: Sentence 1: Two young women walking down the street on a warm day. Sentence 2: Girls enjoying a sunny day.
Example Output:
Man walking his dog through the park.