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.

[Q]: Sentence 1: Originally the post was simply an inter-city letter service. Sentence 2: The post used to be just for inter-city communications.
[A]: yes

[Q]: Sentence 1: The distinction between the two is apparent in Martin Luther King Jr.'s eloquent and moving, I Have a Dream speech, which would have been much less effective had he concluded, Fresh at last, fresh at last, thank God almighty, I'm fresh at last. Sentence 2: I have a dream speech was by Martin Luther King Jr.
[A]: yes

[Q]: Sentence 1: The agency reports that any substantive comments or changes made during the review have been incorporated into the final rule. Sentence 2: The agency says substantive comments made in the review don't have to be included in the final rule.
[A]:
yes