TASK DEFINITION: In this task, you're given a pair of sentences, sentence 1 and sentence 2, that neither agree with nor contradict each other. Your job is to alter sentence 2 so that the pair clearly 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 on a steep incline wearing a white shirt is working on a roof, with lots of debris all around. Sentence 2: A man is cleaning all the trash off a roof.

SOLUTION: The man is doing work.

PROBLEM: Sentence 1: Asian man riding a scooter watches for traffic. Sentence 2: A man is driving on the street.

SOLUTION: There is a man riding a scooter.

PROBLEM: Sentence 1: Two snowboarders are suspended in midair after a jump from a snow slope. Sentence 2: A man and a woman are snowboarding.

SOLUTION:
A pair of people are jumping on their snow boards.