Instructions: 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.
Input: Sentence 1: My father was English, said Mrs. Cavendish, "but my mother was a Russian." Sentence 2: "My mother met my father in Russia," said Mrs. Cavendish.
Output:
no