In this task, you're given a pair of sentences, sentence 1 and sentence 2, that neither agree with nor contradict each other. Your job is to alter sentence 2 so that the pair clearly 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.

Example Input: Sentence 1: A group of children sit on the floor against a brick wall while a woman observes them. Sentence 2: The woman is the kids' teacher.
Example Output: There are kids being watched by a person.

Example Input: Sentence 1: A man wearing headphones is checking the screen of a handheld device while on the street. Sentence 2: Sue was looking at her ipad.
Example Output: Bob was wearing his headphones and checking his ipod while walking.

Example Input: Sentence 1: People sit on benches in front of a large building. Sentence 2: A crowd of people sat on the benches in front of the small building.
Example Output:
A crowd of people sat on the benches.