TASK DEFINITION: In this task, you're given a pair of sentences, sentence 1 and sentence 2, that contradict each other. Your job is to alter sentence 2 so that the pair agree with 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 woman is playing tennis while sitting down in the grass. Sentence 2: A woman is sitting in the cockpit of an aircraft.

SOLUTION: The woman is not standing while playing tennis

PROBLEM: Sentence 1: A small band dressed as peasants performs in the street. Sentence 2: A small band is packing up their equipment

SOLUTION: A small band is playing music

PROBLEM: Sentence 1: A skateboarder does a trick in the air, another watches and so does a crowd. Sentence 2: A boy performs tricks on a BMX bike.

SOLUTION:
A crowd watches a skateboarder perform a trick in the air.