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 man in a gray tank top givers red roses to a woman in a white sundress. Sentence 2: A man with a shirt on is giving flowers to a woman

SOLUTION: A woman is hitting a man.

PROBLEM: Sentence 1: a baseball team being coached. Sentence 2: baseball team has a coach.

SOLUTION: A baseball team has no coach.

PROBLEM: Sentence 1: A man on YouTube teaching a class. Sentence 2: A YouTube video features a man teaching a class.

SOLUTION:
A woman on YouTube demonstrates her knitting technique.