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: Schiff told the Star the story was absolutely not true. Sentence 2: Shiff decided to keep his opinions to himself.
Example Output: yes

Example Input: Sentence 1: But not many more. Sentence 2: It's not happening anymore.
Example Output: no

Example Input: Sentence 1: He had never been one to pick a fight or take up a challenge. Sentence 2: He was too shrewd to bother picking fights or to start any work.
Example Output:
no