TASK DEFINITION: In this task, you're given a pair of sentences, sentence 1 and sentence 2, that neither agree with nor contradict each other. Your job is to alter sentence 2 so that the pair clearly 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 man is cutting something above a sink. Sentence 2: The man is about to cut himself above a sink.

SOLUTION: A man is standing next to a sink

PROBLEM: Sentence 1: A man wearing blue jeans, blue shirt and a cap runs in front of a large truck on a street. Sentence 2: A man in blue jeans and a blue shirt is training for a marathan.

SOLUTION: A man runs on the street.

PROBLEM: Sentence 1: Two people kissing as seen through a train window. Sentence 2: Two people kissing, a woman and another woman, as seen through a train window.

SOLUTION:
People are being close and affectionate.