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: oh yeah the economy uh what i was thinking about is an economical issue concerning it uh Sentence 2: It's not an economical issue.
Example Output: yes

Example Input: Sentence 1: For many, the image of Greek music and dance is inexorably linked to the film Zorba the Greek.  Sentence 2: The film Zorba the Greek is the last thing most people think of when they imagine Greek music and dance.
Example Output: yes

Example Input: Sentence 1: Jon spoke again, nodding his head slightly. Sentence 2: He was trying to convince them.
Example Output:
no