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: 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: Several people selecting food and desert items from an outdoor buffet. Sentence 2: There are people eating outdoors.
The buffet has no customers.

Sentence 1: A big group of students surrounding a storm trooper. Sentence 2: Students surround a storm trooper.

Storm troopers surround students.