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.

Q: Sentence 1: A man in red pushes his motocross bike up a rock. Sentence 2: A man in a red shirt has trouble pushing his bike.

A: A man wearing red with a bike.
****
Q: Sentence 1: A group of young children playing hopscotch on a sidewalk. Sentence 2: Children play hopscotch at preschool.

A: Kids play hopscotch outdoors.
****
Q: Sentence 1: Two women and a man in costume greet each other. Sentence 2: Friends meet up at a costume party.

A:
People greet each other.
****