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: Waves are additive. Sentence 2: Waves are not additive.
Example Output: yes

Example Input: Sentence 1: That is better. An assistant from Parkson's, Theatrical Costumiers, testified that on June 29th, they had supplied a black beard to Mr. L.  Sentence 2: Mr. L had obtained a black beard from Parkson's Theatrical Costumiers.
Example Output: yes

Example Input: Sentence 1: The real question, then, is how to assess character. Sentence 2: How can we judge one's character?
Example Output:
yes