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 biker in uniform suspended in air in front of a crowd of people. Sentence 2: A biker is wearing a police uniform.
Example Output: A human is suspended in air.

Example Input: Sentence 1: One girl is playing a violin, while another girl is playing the piano, and older lady is in the background with her eyes closed. Sentence 2: An older lady has fallen asleep as her grandchildren play music for her.
Example Output: Two girls are playing musical instruments.

Example Input: Sentence 1: Brown dog chewing on a brown walking cane. Sentence 2: A brown dog is chewing on a cane because he is hungry.
Example Output:
A dog is damaging a walking cane.