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: Group of runners participate in a marathon. Sentence 2: People are running.

SOLUTION: People are sitting in a library.

PROBLEM: Sentence 1: Two young girls wearing hijabs stand in a dirt courtyard, one has her arms folded and looks away the other is staring into the camera with her hands on her hips. Sentence 2: Two young girls are standing outside.

SOLUTION: The two young girls are actually men in hijabs.

PROBLEM: Sentence 1: Three people, two males and a female, are sitting in front of a tall tree on the ground during a rest from a hike. Sentence 2: A group sits after a hike.

SOLUTION:
Three people are together outside.