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: They use the same tools and methods as their ancestors, and demonstrate the same skills. Sentence 2: They use some of the same methods, but have adapted them with modern technology.
yes

Sentence 1: I assure you that you need not let it trouble you.  Sentence 2: It may bother someone else. 
no

Sentence 1: If the Postal Service faced competition in all areas, some of these weaknesses might be associated with cream that could be skimmed. Sentence 2: Competition against the Postal Service would quickly be eliminated by the Postal Service's efficiency and expertise.

yes