TASK DEFINITION: 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.
PROBLEM: Sentence 1: Someone with an orange jacket walking with a bike points to a building. Sentence 2: Someone in a jacket is walking with a bike

SOLUTION: Someone with a red jacket walking with a bike points to a building.

PROBLEM: 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.

SOLUTION: A teacher is talking to her classroom.

PROBLEM: Sentence 1: Two men in a bar making funny faces while holding a drink with their right hand. Sentence 2: Two men are indoors making faces.

SOLUTION:
Two men are outside with a drink.