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: Several people selecting food and desert items from an outdoor buffet. Sentence 2: There are people eating outdoors.

SOLUTION: The buffet has no customers.

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: Two men are carrying on a conversation on a sidewalk. Sentence 2: Some people are talking outside.

SOLUTION:
Everyone is silent as they watch the TV.