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: For purposes of this exercise, there are at least seven categories of costs and four benefits that might be reviewed. Sentence 2: There are no more than six categories of costs to be reviewed for this exercise.
Example Output: yes

Example Input: Sentence 1: reports that the grassroots relief effort could strengthen Turkish democracy. Sentence 2: Some are saying that a grassroots relief effort could fortify Turkey's democracy.
Example Output: yes

Example Input: Sentence 1: His eyes avoided the other, and he seemed uncomfortable. Sentence 2: He could not look the other in the eyes.
Example Output:
no