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 in shorts skateboards down the street. Sentence 2: The man is not wearing a shirt.
Example Output: The man is outside.

Example Input: Sentence 1: A person standing on a stage in front of a seated crowd Sentence 2: Someone is performing for others.
Example Output: Someone is standing on stage in front of a crowd.

Example Input: Sentence 1: a black man plays the electric bass while a child watches Sentence 2: A child enjoys the music played by a black man.
Example Output:
A black man plays music while a child watches.