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: Six men sit in front of a dock, four of them wearing blue. Sentence 2: Six men sit outside.
Example Output: Six women sit outside a mansion.

Example Input: Sentence 1: A group of people are looking at nature. Sentence 2: People are looking outside.
Example Output: A group of kids are swimming.

Example Input: Sentence 1: A man is running in a race and his bib number is 2014 Sentence 2: A human running.
Example Output:
Nobody is running.