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: It affects the lives of each and every American. Sentence 2: Every African is affected by it.
Example Output: yes

Example Input: Sentence 1: I should never have thought of that." Sentence 2: That was such a bad idea.
Example Output: no

Example Input: Sentence 1: Instead, he might have consulted the works of J.B. Sentence 2: He could have looked at the works of J.B.
Example Output:
yes