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.

Sentence 1: An older man and a young child in a costume interact with one another. Sentence 2: The grandparent is speaking to their grandchild.
An old person is talking to a child.

Sentence 1: Two employees knead and prepare dough for use with making cakes as seen through the window. Sentence 2: Two employees kneading dough before a large baking competition.
Two employees kneading dough.

Sentence 1: A teenager skateboards in front of a large mural. Sentence 2: A teenager skateboards in front of a large mural doing a trick.

A teenager skateboarding