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.

Sentence 1: Two men carrying briefcases look across the street in a city. Sentence 2: There are two men looking across the street.
Two men carrying briefcases knock on the door of the rural farm house.

Sentence 1: Bearded man playing a game with toy soldiers, tanks and a dice with a soldier and a bomb painted on it. Sentence 2: A man with a beard plays with several military-related toys.
A young woman plays with a doll.

Sentence 1: A guy grinds a windowsill near an old windmill Sentence 2: A man is grinding something

A man is at school.