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 family, grandparents, parents, and children, are sitting in front of a fireplace and a christmas tree opening presents. Sentence 2: A family, grandparents, parents, and children, are sitting

SOLUTION: A family, grandparents, parents, and children, are not sitting

PROBLEM: Sentence 1: Person riding wave on stomach on a blue surfboard. Sentence 2: A person on a wave.

SOLUTION: Nobody on a wave.

PROBLEM: Sentence 1: A happy couple enjoying their open air wedding. Sentence 2: A happy couple enjoying their open air wedding.

SOLUTION:
A mad couple enjoying their open air flower pot.