instruction:
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.
question:
Sentence 1: There was an enormous sphere of thin crystal to represent the sky. Sentence 2: The crystal is very expensive and precious.
answer:
no


question:
Sentence 1: Because it is a win-at-all-costs war to restore military prestige, Russian generals have shown utter indifference to civilian casualties and a willingness to lie to retain popular support. Sentence 2: Russian generals have assassinated many people in the past.
answer:
no


question:
Sentence 1: A case in point can be found in the last omnibus rate case, the R97-1 case. Sentence 2: This is the first time that the omnibus rate has ever been considered.
answer:

yes