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 wearing no shirt climbs a steep cliff. Sentence 2: A shirtless man was climbing up the face of the cliff.
The lady was hiking the mountain.

Sentence 1: A man with a gray shirt and gray pants is working on a project near the water with another man who is wearing just shorts and a hat. Sentence 2: The two men are working together.
They are complete strangers.

Sentence 1: An extreme skier forms an X with their skis, jumping high in the sky. Sentence 2: The skier is going very fast.

The skier has never left the ground.