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: A guy wearing a black shirt and a red hat riding his skateboard. Sentence 2: A guy is riding a skateboard.
A guy is riding a scooter.

Sentence 1: A family sits around at Christmas time, some playing Jenga while others play with children. Sentence 2: Some people are playing Jenga.
A family is shooting fireworks.

Sentence 1: A woman and child sitting in a big tree with large branches. Sentence 2: The woman and child are above the ground.

The woman is asleep on the picnic table.