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 a black shirt and jeans is barbecuing outdoors. Sentence 2: A man is outside cooking on the grill.
A man sits on the couch and reads.

Sentence 1: A person is climbing a rock while holding onto a white rope. Sentence 2: The person is outdoors.
The rope is made of black nylon.

Sentence 1: Man setting up a tent outside with onlooking girlfriend waiting. Sentence 2: A couple putting together something they bought.

The man is setting up a foam pool.