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: An older couple crossing the street. Sentence 2: Two elderly people are in the street.
Example Output: An older couple is sitting on a bench.

Example Input: 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
Example Output: An old man is jogging

Example Input: Sentence 1: A dog putting his legs into a pond Sentence 2: The dog is at a pond.
Example Output:
The dog is on the couch