TASK DEFINITION: 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.
PROBLEM: Sentence 1: Was it reasonable to destroy almost all their tremendous civilization in atomic warfare over causes our historians can no longer accurately determine?" The Industrialist brooded over it. Sentence 2: It was reasonable to use atomic warfare.

SOLUTION: yes

PROBLEM: Sentence 1: 'Of course. Sentence 2: It was obviously so.

SOLUTION: yes

PROBLEM: Sentence 1: For those who find it difficult to appreciate mosaics as we usually see them, in fading indecipherable fragments, the beautifully preserved mosaic decoration of Ravenna's churches, up to 1,500 years old, come as an exciting revelation. Sentence 2: It is impossible to consider a mosaic as a whole. 

SOLUTION:
yes