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: In the following centuries sand swept through the area burying many of the buildings. Sentence 2: Over time, sand swept through the region and buries the buildings.

Output: yes


Input: Consider Input: Sentence 1: Have you anyone who can testify to that? Sentence 2: Can anyone confirm that?

Output: yes


Input: Consider Input: Sentence 1: By comparison, this is a significant increase in the reserve margin since it dipped below 10 percent in the late 1990's. Sentence 2: The reserve margin is getting much better.


Output: no