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 woman who is holding a blue ribbon is standing with one leg on the ground and the other leg in a vertical manner above her waist while most of the rest of her body is in a horizontal position. Sentence 2: A woman is practicing her yoga positions.
Example Output: A woman holding a blue ribbon is standing in a yoga pose, with one leg vertical and above her waist.

Example Input: Sentence 1: A group of people are in a large raft on choppy water. Sentence 2: A group of people are rafting on the river.
Example Output: There are people rafting.

Example Input: Sentence 1: A lady standing in front of a lot of elementary school aged children who are sitting on the floor. Sentence 2: The lady is a teacher.
Example Output:
Children are sitting on the floor near a woman.