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 cap teaches children proper bike maintenance. Sentence 2: A man is teaching some children.
Example Output: A lady is watching a movie.

Example Input: Sentence 1: A woman in a purple shirt running a marathon getting water splashed on her. Sentence 2: A woman in a shirt running a marathon getting water splashed on her.
Example Output: A man in a purple shirt running a marathon getting water splashed on her.

Example Input: Sentence 1: An elderly man opens a wine bottle while standing behind a bar. Sentence 2: The older gentleman pulls the cork from a bottle.
Example Output:
The old man is not behind the bar.