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: One girl is standing on the street, and the other is crouching looking at something on the ground. Sentence 2: A girl is preoccupied with something on the ground.

SOLUTION: A teacher is talking to her classroom.

PROBLEM: Sentence 1: A man in a blue jacket smiles back at the camera, positioned in front of a lake or large river on a clear sunny day. Sentence 2: A man is posing for a picture outside.

SOLUTION: A man is snowboarding down a huge mountain.

PROBLEM: Sentence 1: A girl in a black sweatshirt pours a bit of liquid into a small glass. Sentence 2: A girl in a sweatshirt pouring liquid.

SOLUTION:
A naked girl drinking wine.