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 blue pants is doing a split in the air. Sentence 2: A man does a grand jete.
Example Output: A man makes a cocktail.

Example Input: Sentence 1: A couple of people sit outdoors at a table with an umbrella and talk. Sentence 2: A couple people sit under an umbrella at a table.
Example Output: Two people walk in the park in silence.

Example Input: Sentence 1: Two young boys one in a white tank top and the other one in striped shirt in what looks like a landfill dump. Sentence 2: two boys playing in a dump
Example Output:
The two boys are the first children to land on Mars