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: Person listening to mp3 player sitting on curb. Sentence 2: A person sits outside while listening to their mp3 player.
Example Output: She listens to her iPod while jogging.

Example Input: Sentence 1: A black man in a white cap and tank top lean over a wooden work area with an engraving tool in his hand among other tools. Sentence 2: The man carries tools near a worksite.
Example Output: A man jumps off a bridge.

Example Input: Sentence 1: A woman is putting a helmet on a small girl. Sentence 2: There is a helmet near a small girl.
Example Output:
The small girl does not have a head.