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: Consider Input: Sentence 1: This element focuses on the executive's performance towards the balanced scorecard targets at the regional office and national levels, in addition to specific performance priorities with corresponding targets. Sentence 2: The executive's performance needs to be unbalanced.

Output: yes


Input: Consider Input: Sentence 1: This is a simplification of reality, which probably involves a curve with a slight upward slope. Sentence 2: In reality, it's probably a 20 degree upward slope. 

Output: no


Input: Consider 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