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: The people are eating by a teal colored wall. Sentence 2: The people are eating outside.
Example Output: The people are eating food.

Example Input: Sentence 1: A man wearing glasses is singling while holding a guitar while a shirtless man in a fedora plays drums. Sentence 2: A person is singing a song he wrote.
Example Output: People are making music together.

Example Input: Sentence 1: Martial artists are sparring against one another. Sentence 2: The martial artists are both black belts.
Example Output:
The martial artists are fighting.