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 biker enjoys a coffee. Sentence 2: A person is having a beverage.
A biker is drinking beer and playing pool with his friends.

Sentence 1: Three girls pose for a picture and one of the girls kisses the others cheek. Sentence 2: One of the girls kisses the other
Three boys are eating pizza.

Sentence 1: A man wearing orange reflective clothing and a red hard hat shovels watery mud next to a low cement wall. Sentence 2: A man can shovel

The man is wearing all black clothing.