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.

Ex Input:
Sentence 1: So them strays join up with th' wild ones. Sentence 2: Strays stay away from the wild ones. 

Ex Output:
yes


Ex Input:
Sentence 1: Fiscal Policy, Population Aging, and National Saving, Journal of Economic Perspectives    Sentence 2: Fiscal policy is directly related to population aging.

Ex Output:
no


Ex Input:
Sentence 1: A good case study explicitly identifies alternative explanations, lays out the chain of reasoning, and makes clear which conclusions rest primarily on the investigators' insightful recognition of patterns of evidence and which have been recognized in other ways. Sentence 2: Only bad case studies lay out a chain of reasoning.

Ex Output:

yes