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: A small child pushes a stroller down the street. Sentence 2: A small child holds onto a stroller.

SOLUTION: A small child tips over a stroller.

PROBLEM: Sentence 1: Many people are sitting in yellow folding chairs. Sentence 2: The people are sitting in chars.

SOLUTION: Everyone is standing on a cliff.

PROBLEM: Sentence 1: An elderly woman looks upset, and an elderly man is in the background. Sentence 2: The elderly man is behind the woman.

SOLUTION:
Two young people are talking.