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: Two vehicles are parked outside a small grocery store. Sentence 2: Two vehicles are not moving.
The vehicles are driving away from the grocery store.

Sentence 1: Many people on a street while vendors sell items. Sentence 2: The vendor is selling items on a street.
The vendor is inside a museum.

Sentence 1: Two asian students are doing work at a chalkboard Sentence 2: Two people are working.

Two students are eating lunch.