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 young girl jumps in the air in front of a white house. Sentence 2: A girl is leaping outside.

SOLUTION: A girl is laying on the couch.

PROBLEM: Sentence 1: A young man sits on a chair with one shoe off. Sentence 2: Someone has taken a shoe off.

SOLUTION: Everyone is wearing two shoes.

PROBLEM: Sentence 1: A live performance of two artists. Sentence 2: Two artists are performing live.

SOLUTION:
Two artists are sleeping.