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: Our overall objective was to determine whether best practices offer methods to improve the way DOD ensures that the design is stable early in the development process and whether having manufacturing processes in control before production results in better cost, schedule, and quality outcomes in DOD major acquisition programs. Sentence 2: They wanted to use the best practices for other projects as well.
Example Output: no

Example Input: Sentence 1: If they say so, said the Astronomer, "I'm sure it will. Sentence 2: That must be the case.
Example Output: yes

Example Input: Sentence 1: The chances of detecting a spike in toxicity would depend on the frequency of sampling, and the probability of missing spikes is high. Sentence 2: It is quite possible that spikes in toxicity would be missed. 
Example Output:
yes