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 neither agree nor 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 group of people stare at a building. Sentence 2: A group of people looking at a building.
A group of people are waiting for the building to open.

Sentence 1: With one using the cutting board, three chefs prepare a meal, as customers converse while they wait. Sentence 2: Human conversing
Tall humans conversing

Sentence 1: Rock climber scaling a straight up and down rock with crack in middle. Sentence 2: A person is rock climbing on a cracked rock.

A man is practicing his rock climbing by scaling a straight up and down rock.