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: three men in brown shorts are walking on rocks beside a river. Sentence 2: Three men are hiking.
Example Output: Some men walking on rocks.

Example Input: Sentence 1: Riders waiting to get on the train. Sentence 2: People are waiting to get on a train to start their vacation travel.
Example Output: People wait to board the train.

Example Input: Sentence 1: A person on a bike flies through the air with the sun flaring through the bike frame. Sentence 2: The bike is a motorcycle.
Example Output:
It is daytime.