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 with gray hair accepts coins in front of a kiosk that has a multitude of fine colored powders in large bowls on display. Sentence 2: A man has gray hair.

SOLUTION: A man has white hair.

PROBLEM: Sentence 1: A person in black covering their face with their hands. Sentence 2: This person is emotional.

SOLUTION: A person hides their face from Santa's gaze.

PROBLEM: Sentence 1: A man in a blue shirt and jeans grinds down a rail on his skateboard. Sentence 2: A man is skateboarding.

SOLUTION:
The man is in a wheelchair.