In this task, you're given a pair of sentences, sentence 1 and sentence 2, that neither agree with nor contradict each other. Your job is to alter sentence 2 so that the pair clearly 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 brown dog is laying on its back on the grass with a ball in its mouth. Sentence 2: The dog is playful.
Example Output: A dog is on the grass with his toy.

Example Input: Sentence 1: A man reaching for a string of sausage links. Sentence 2: The man is cooking breakfast.
Example Output: A man is getting sausage.

Example Input: Sentence 1: A man running in a marathon runs past 3 bagpipe players, and a drummer, all wearing a uniform Sentence 2: A parade goes by a marathon.
Example Output:
A man is participating in a marathon