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 person bundled and head covered laying on the sidewalk. Sentence 2: A person is outdoors.
Example Output: A person is naked on the sidewalk.

Example Input: Sentence 1: a black dog runs through the water. Sentence 2: There is a dog in the water.
Example Output:
a fish chases a dog on the sand