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: In providing services and in establishing classifications, rates, and fees under this title, the Postal Service shall not, except as specifically authorized in this title, make any undue or unreasonable discrimination among users of the mails, nor shall it grant any undue or unreasonable preferences to any such user. Sentence 2: Discrimination is preferred by the Postal Service.

Ex Output:
yes


Ex Input:
Sentence 1: Russian Orthodox nuns oversee the church and its grounds. Sentence 2: The nuns are happy to tend to the grounds.

Ex Output:
no


Ex Input:
Sentence 1: So intent was he on arriving that he had no plan for addressing what he had seen. Sentence 2: He stopped in disbelief to think of what he had just seen... it haunted him.

Ex Output:

yes