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 neither agree nor 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: A young girl and an older man are checking out at the food store. Sentence 2: There are people in a food store buying items.
A young girl is behind an old man in a checkout line.

Sentence 1: A born dog carries some fruit in his mouth while two other dogs follow him. Sentence 2: A baby animal walking ahead and two other adults of the same kind following it.
A puppy being followed by protective parent dogs.

Sentence 1: The professor is teaching to their students. Sentence 2: A professor is teaching a class

A professor is quizzing his students