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.

Input: Consider Input: Sentence 1: He wore a helm shaped like the head of a lion complete with a mane of real fur. Sentence 2: He had fur on his helm.

Output: yes


Input: Consider Input: Sentence 1: While a cost-per-case analysis is limited in that it only addresses quantity, and not quality of services, it does provide some useful quantitative information. Sentence 2: Only quantity is examined, not quality.

Output: yes


Input: Consider Input: Sentence 1: Although an opportunity exists to intervene with patients who have alcohol use problems, and there are published guidelines for emergency department and trauma centers concerning intervention, that opportunity has not been seized. Sentence 2: The opportunity hasn't been seized because there is no alcoholics in this area.


Output: no