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: Four people sitting behind a table. Sentence 2: four people are enjoying a day at the lake
Example Output: four people are at a table

Example Input: Sentence 1: A girl rides by on a bicycle while a boy watches her. Sentence 2: There is a girl riding a bike outdoors racing a boy
Example Output: There is a girl riding a bike

Example Input: Sentence 1: A group of teenagers stand and sit on a house porch. Sentence 2: kids plot what to do with the rest of their while on the porch
Example Output:
A group of teenagers, some standing and others sitting on a house porch