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 black man wearing glasses peers out of a subway train at Wall Street. Sentence 2: A man with glasses on a train.

SOLUTION: A white man on peers out of a bus at Wall Street.

PROBLEM: Sentence 1: A young boy plays on a playground piece shaped like a seahorse. Sentence 2: A little boy playing in a playground.

SOLUTION: A little boy swinging on a swingset.

PROBLEM: Sentence 1: Two dogs play in a grassy field. Sentence 2: There are two dogs playing.

SOLUTION:
There are three dogs sitting.