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: 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: A man is poling in a canoe in a tropical location. Sentence 2: A man is on the water in a canoe.

A man is hitting baseball.