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: And while it would be a mistake to say that the stock could have opened at that highest price, it's safe to say that if Robertson Stephens had done a better job of gauging demand, millions of dollars that went into traders' pockets would have gone into Pixar's vaults instead. Sentence 2: Many people lost their jobs due to Robertson Stephens failure to properly calculate demand. 
[EX A]: no

[EX Q]: Sentence 1: Air quality modelers face two key challenges in attempting to translate emission inventories into pollutant concentrations. Sentence 2: Translating emission inventories itno polutant concentrations is becoming more possible.
[EX A]:
no