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 red shirt holds a beer can and hammers while a man in a white shirt looks on. Sentence 2: the man has a beer can
Example Output: the man does not have a beer can

Example Input: Sentence 1: Pedestrians interact with street artists. Sentence 2: Street artists are interacting with pedestrians.
Example Output: The street artists do not acknowledge the pedestrians

Example Input: Sentence 1: A man and woman dive off the back end of a boat in to crystal blue water. Sentence 2: Two people dive off a boat.
Example Output:
The people did not dive off a boat.