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 person dressed in blue performing a back flip. Sentence 2: A person dressed in blue performing a back flip
Example Output: A person dressed in blue sleeping in his bed

Example Input: Sentence 1: A dachshund puppy jumps on a bed. Sentence 2: A dog is in the air.
Example Output: A dog is sleeping in the den.

Example Input: Sentence 1: Several people, including a man in a pink and black striped shirt who is taking a picture of something off-camera, are in a city park. Sentence 2: Several people at a park.
Example Output:
Several people at a street fair.