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 man sitting in a blue metal chair. Sentence 2: A man is exhausted and sitting down.
Example Output: A man is resting in a blue chair.

Example Input: Sentence 1: A crowd of people look through clothes and books that are laid out in a large atrium. Sentence 2: A crowd of people at a yard sale.
Example Output: A crowd of people looking through items.

Example Input: Sentence 1: A person wearing a navy jacket and black hat jumping over a small partition on a horse. Sentence 2: A person is jumping a small gate horseback.
Example Output:
A person is jumping.