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.

Example Input: Sentence 1: EPA performed an Economic Analysis of the final rule, including the Clean Air Act and Clean Water Act portions of the rule, and the analysis is summarized in the preamble to the final rule. Sentence 2: The EPA refused to perform any kind of analysis.
Example Output: yes

Example Input: Sentence 1: Below, we describe our efforts during on-site visits and in the competition process to achieve this goal. Sentence 2: Under this statement you shall find our efforts during on site visits.
Example Output: no

Example Input: Sentence 1: Gravestones rest along the tenement walls marking the outer perimeter. Sentence 2: The Gravestones have no markers to know what their outer perimeter is.
Example Output:
yes