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.

[Q]: Sentence 1: If they say so, said the Astronomer, "I'm sure it will. Sentence 2: That must be the case.
[A]: yes


[Q]: Sentence 1: Fix it, Dave Hanson. Sentence 2: Dave Hanson, you must remedy this.
[A]: yes


[Q]: Sentence 1: They stood in silence, staring at the man. Sentence 2: They could not believe what the man had just confessed to. 
[A]:
no