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.

[EX Q]: Sentence 1: A person rappels off a cliff face. Sentence 2: Someone is climbing on a cliff.
[EX A]: A hot air balloon crashes into the ground.

[EX Q]: Sentence 1: A man long boarding down an empty street. Sentence 2: A skateboarder skating down a street.
[EX A]: A man bicycles down a street.

[EX Q]: Sentence 1: A group of people in an office having a conversation. Sentence 2: A group of people are conversing in an office.
[EX A]:
A group of people are eating lunch.