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.

Sentence 1: One girl is standing on the street, and the other is crouching looking at something on the ground. Sentence 2: A girl is preoccupied with something on the ground.
A teacher is talking to her classroom.

Sentence 1: A dog tied to a leash in an open grassy area. Sentence 2: The dog is outside.
The dog is inside the dog shop.

Sentence 1: Two men in green underwear and green beads dance together. Sentence 2: Two guys are enjoying each others company.

Both men are wearing orange underpants.