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 bicyclists riding down a steep course wearing helmets. Sentence 2: the bicyclists are being careful down the steep course.
Example Output: The bicyclists are  wearing helmets.

Example Input: Sentence 1: Man with a camouflage hat is throwing knives at a target. Sentence 2: an army colonel is throwing knives.
Example Output: a man is throwing knives

Example Input: Sentence 1: Five people in a race are walking next to each other. Sentence 2: The five people are all friends.
Example Output:
The people are all upright and moving forward.