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: A man dressed in cowboy attire is riding a horse. Sentence 2: the horse is white
Example Output: a man riding a horse

Example Input: Sentence 1: Nine people riding their horses. Sentence 2: the people are riding their horses on a trail.
Example Output: horses are being ridden

Example Input: Sentence 1: A woman's lower body can be seen as she wears blue jeans and walks in front of a large sign depicting another woman wearing a black top and sunglasses. Sentence 2: A woman power walks in front of an advertisement.
Example Output:
A woman is walking outside.