In this task, you're given a pair of sentences, sentence 1 and sentence 2, that agree with each other. Your job is to alter sentence 2 so that the pair 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 guys, one playing the guitar, one playing the keyboard accordion and one playing the violin. Sentence 2: Three people are playing musical instruments.
Example Output: All three guys are playing guitars.

Example Input: Sentence 1: People are standing and sitting at round tables in a large room. Sentence 2: People gathered in a room.
Example Output: People boarding a bus.

Example Input: Sentence 1: A dog splashing in the water. Sentence 2: An animal splashing in the water.
Example Output:
A cat splashing in the water.