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: Two professional soccer players are playing with a ball on the field. Sentence 2: Two soccer players with a ball.

SOLUTION: Two soccer players prepare to enter the game on the sidelines.

PROBLEM: Sentence 1: A man wearing colorful clothing and white sunglasses is playing a large drum with his hands. Sentence 2: The man is near a drum.

SOLUTION: The man begins to play the guitar.

PROBLEM: Sentence 1: One dog is jumping in the air and the other is standing next to it. Sentence 2: Two dogs together.

SOLUTION:
A car runs down an alley.