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: As previously noted, LSC reissued its CSR instructions to all grantees, calling attention to problem areas known at that time. Sentence 2: LSC never reissued CSR instructions.
Example Output: yes

Example Input: Sentence 1: Fiscal Policy, Population Aging, and National Saving, Journal of Economic Perspectives    Sentence 2: Fiscal policy is directly related to population aging.
Example Output: no

Example Input: Sentence 1: Taking Steps to Meet Current and Emerging Human Capital Challenges Sentence 2: Human capital challenges cannot  be met.
Example Output:
yes