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: A man in his office, is staring intently at the computer screen, while holding a red pen in his left hand. Sentence 2: A man in his office, is staring intently at the computer screen
A man in his office, is not staring intently at the computer screen

Sentence 1: A girl hanging upside down on a rope over a grassy lawn above a city. Sentence 2: The girl is hanging upside down.
The girl is standing by the rope.

Sentence 1: The senior citizen, wearing the tracksuit, is skateboarding through the park. Sentence 2: The senior citizen is outside in the park.

The senior is dreaming.