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 person wearing a hat and baggy pants is skateboarding on cement. Sentence 2: A human rides a skateboard.

SOLUTION: An old man falls off a skateboard.

PROBLEM: Sentence 1: A woman wearing a pink dress polka dot dress carrying a white umbrella and black purse. Sentence 2: A woman is wearing a pink dress carrying a white umbrella.

SOLUTION: A woman is holding a black umbrella and white purse.

PROBLEM: Sentence 1: Motocross Riders racing to the finish line. Sentence 2: People racing to the finish line.

SOLUTION:
Marathon runners race to the finish.