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: Pedestrians interact with street artists. Sentence 2: Street artists are interacting with pedestrians.
The street artists do not acknowledge the pedestrians

Sentence 1: Two children, one wearing purple, the other black, ride a single bike on the pavement. Sentence 2: Two children ride the same bike.
Two adults ride a double seater bike.

Sentence 1: A brown dog, a black dog and a black and white dog are in a grassy field Sentence 2: A dark, darker and light dog are in a meadow.

Different breeds of dogs are sleeping at home.