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 person in a black jacket is grabbing a boy's shoulder to stop him from backing into the road while a silver Mini is driving by. Sentence 2: A father is grabbing his son's shoulder.
Example Output: A silver mini is on the road.

Example Input: Sentence 1: Two people posing for a picture. Sentence 2: Two people are getting glamour shots.
Example Output: Two people are posing.

Example Input: Sentence 1: A boy in a black and white shirt holds a red skateboard as he stands over the Hollywood Stars. Sentence 2: The boy is a professional skateboarder.
Example Output:
The boy is holding a skateboard.