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.

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.
yes

Sentence 1: Drew commented on that, and Nye answered: "Old Man knows what's he's doin'. Sentence 2: Nye responded, "Old Man is totally in the dark here. 
yes

Sentence 1: This is one reason why some of us cringed when Ron Brown began taking planeloads of businessmen off on sales trips to China and so on. Sentence 2: It was because of this why we cringed when Ron Brown took a lot of businessmen overseas to go on sales trips.

yes