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: Many dogs are running the same way in a field. Sentence 2: Many dogs are running together
Example Output: Cats are chasing birds

Example Input: Sentence 1: A man in his office, is staring intently at the computer screen, while holding a red pen in his left hand. Sentence 2: A man in his office, is staring intently at the computer screen
Example Output: A man in his office, is not staring intently at the computer screen

Example Input: Sentence 1: Man in a black bodysuit is surfing in the ocean. Sentence 2: A person is surfing on the water.
Example Output:
A man in a tiny speedo is surfing in the ocean.