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.

Example Input: Sentence 1: A lady attired in an apron stands over a kettle, preparing food, while patrons sit, chat, and dine in the background. Sentence 2: The lady is wearing an apron
Example Output: The lady is preparing food and dining.

Example Input: Sentence 1: A little boy is riding a dirt bike with the number seven on it going down a hill. Sentence 2: A little boy is going downhill.
Example Output: A little boy is driving a car.

Example Input: Sentence 1: A businessman and a security guard are smiling and talking outside a glass building. Sentence 2: People are smiling and talking.
Example Output:
People are arguing outside.