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: Two men in dark outfits jogging in the woods in Autumn. Sentence 2: Two guys were jogging in the dark

SOLUTION: Two naked guys are going swimming.

PROBLEM: Sentence 1: A young girl playing clarinet in a musical group. Sentence 2: A girl playing clarinet in a musical group.

SOLUTION: An old girl playing clarinet in a musical group.

PROBLEM: Sentence 1: A woman wearing a yellow dress is walking down a sidewalk while a man wearing a blue shirt is sleeping on a bench. Sentence 2: The woman is wearing yellow.

SOLUTION:
The man is jumping up and down.