In this task, you're given a pair of sentences, sentence 1 and sentence 2. Your job is to determine if the two sentences clearly agree/disagree with each other, or if this can't be determined. Indicate your answer as yes or no respectively.
Q: Sentence 1: Eventually a new offensive, the decisive Gempei War, was launched in 1180. Sentence 2: The Gempei War was a short-lived, but brutal slaughter.
A:
no