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.

Example Input: Sentence 1: A man appears to be calling someone on his phone while a child is standing behind him. Sentence 2: A child is wearing blue jeans.
Example Output: A person is using a phone.

Example Input: Sentence 1: A man in shorts skateboards down the street. Sentence 2: The man is not wearing a shirt.
Example Output: The man is outside.

Example Input: Sentence 1: A group of co-ed youth hand wash a red truck, one washes the back glass while another washes the side with a rag. Sentence 2: A group of co-ed youth hand wash a light red truck.
Example Output:
A truck is being washed.