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: An authority-figure in a white helmet, wearing a yellow vest, and sitting on a yellow motorcycle. Sentence 2: A police officer sitting on a motorcycle on the road.
Example Output: A person in a helmet is seated on a motorcycle.

Example Input: Sentence 1: A man with a striped shirt that has a white bag over his shoulder is standing at a station with speakers about a TV screen and controls under the TV screen. Sentence 2: A man is at the station with his friend.
Example Output: There is a man with a bag over there.

Example Input: Sentence 1: A girl is performing karate in front of people. Sentence 2: The girl is a blue belt.
Example Output:
The girl practices karate.