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: It looked dark outside while in the empty restaurant, a young guy dressed in black sat in a booth playing the harmonica. Sentence 2: A young man is playing the harmonica.

SOLUTION: A man with a harmonica in his pocket is walking down the street.

PROBLEM: Sentence 1: A small black dog is running along side a bigger tri-colored dog that is carrying a rope toy in its mouth. Sentence 2: A small dog running next to a colorful dog carrying an object in it's mouth.

SOLUTION: Two dogs are riding in a car

PROBLEM: Sentence 1: People standing or sitting at a market. Sentence 2: People are at the market.

SOLUTION:
People are at the fair.