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

Example Input: Sentence 1: This element focuses on the executive's performance towards the balanced scorecard targets at the regional office and national levels, in addition to specific performance priorities with corresponding targets. Sentence 2: The executive's performance needs to be unbalanced.
Example Output: yes

Example Input: Sentence 1: Joyce himself must have known the house as the residence of Mr. Denis J. Maginni, professor of dancing, who appears several times in Ulysses. Sentence 2: Denis J. Maginni never appears in Ulysses.
Example Output:
yes