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: Group of runners participate in a marathon. Sentence 2: People are running.

SOLUTION: People are sitting in a library.

PROBLEM: Sentence 1: A young man stands on a sidewalk between a newspaper dispenser and a trashcan, with a bus in the background. Sentence 2: A man stands ouside

SOLUTION: A young man stands on the roof of a skyscraper

PROBLEM: Sentence 1: Two people talking as they walk in the winter with the sun shinning on them. Sentence 2: People speaking words outside as they take steps.

SOLUTION:
Two people standing silently in the winter on a sunny day.