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 gentleman wearing a hat and a blue button-up shirt is painting a city scene outside on a sunny day. Sentence 2: The gentleman is enjoying nice weather.

SOLUTION: a woman poses for a nude portrait

PROBLEM: Sentence 1: a biker enjoys a coffee. Sentence 2: A person is having a beverage.

SOLUTION: A biker is drinking beer and playing pool with his friends.

PROBLEM: Sentence 1: Two children play a game together. Sentence 2: Two people are playing a game.

SOLUTION:
Two people are dancing in the snow.