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: But the conflict itself might create such a tendency or incentive. Sentence 2: It's possible that the conflict could lead to a tendency or incentive of that sort.
Example Output: yes

Example Input: Sentence 1: His old eyes bored into the younger man, and he nodded. Sentence 2: He did not look at the younger man.
Example Output: yes

Example Input: Sentence 1: Rennie on his way to Johnny Shannon ... What had Fenner said-"li'l cub ... warn't more 'n four."Drew Rennie at four hard to sort out one very early memory from another. Sentence 2: Rennie knew Johnny Shannon.
Example Output:
no