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: activities calculated with data collected in 1985. Sentence 2: The data was collected in 1985
[EX A]: yes

[EX Q]: Sentence 1: I've sprained something. Sentence 2: My ankle hurts a little bit.
[EX A]: no

[EX Q]: Sentence 1: This force supposedly makes stars self-organize into galaxies, and inanimate molecules, into living cells. Sentence 2: The force of gravity is the reason why stars form galaxies. 
[EX A]:
no