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 man in a worn Arizona ball cap, polo shirt, and dark pants stitches something on his lap. Sentence 2: a guy with a cap and pants fiddles in his lap
Example Output: two men knit together

Example Input: Sentence 1: A black dog with a stuffed animal in its mouth is running and jumping through a snowy field. Sentence 2: There is a dog in a field
Example Output: The dog has nothing in its mouth

Example Input: Sentence 1: old man in a cap fixing a broken chair Sentence 2: An man is fixing a chair.
Example Output:
An old man is sabotaging a desk.