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 young Asian boy running with a white and gray dog on green grass. Sentence 2: A boy and his dog are outside.
Example Output: The boy is giving his dog a bath.

Example Input: Sentence 1: A woman with a blue sports bra doing weightlifting. Sentence 2: A woman doing weightlifting.
Example Output: A woman with a red training bra doing push ups.

Example Input: Sentence 1: A band playing on a stage. Sentence 2: A band is on stage performing.
Example Output:
A marching band is in a parade.