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 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.
[EX A]: yes

[EX Q]: Sentence 1: At the very northern tip of the Sinai is Taba, with several large hotels, marking the Egyptian/Israeli border. Sentence 2: Taba's hotels are all very expensive, but have good room service.
[EX A]: no

[EX Q]: Sentence 1: uh-huh yeah uh-huh yeah it might be handy yeah they're pretty neat little i've never seen one Sentence 2: A sprinkler system would be useful.
[EX A]:
no