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: They were justifiably concerned, advocates say. Sentence 2: The concern was quite normal due to the case.
[EX A]: no

[EX Q]: Sentence 1: The cooler climate makes jungle walks here a special pleasure, not least of all for the myriad brightly colored butterflies around the waterfalls, with almost a dozen officially listed. Sentence 2: Walking in the jungle here is pleasurable as it is cooler.
[EX A]: yes

[EX Q]: Sentence 1: There's no central phone book for all e-mail addresses. Sentence 2: Phone books don't have all email addresses.
[EX A]:
yes