instruction:
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.
question:
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.
answer:
A teacher is talking to her classroom.


question:
Sentence 1: Older woman in red sweeter is opening a gift. Sentence 2: An older woman is wearing a sweater.
answer:
An older woman is wearing a solid yellow sweater.


question:
Sentence 1: Two women and a man are all wearing black jackets and smiling. Sentence 2: Two women and a man are all happy.
answer:

Some people are are smiling because their black jackets are uncomfortable.