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 Input:
Sentence 1: Limestone stoichiometry is the number of moles of Ca added per mole of SO2 removed. Sentence 2:  Limestone stoichiometry is the number of moles of Ca added per mole of SO2 removed.

Ex Output:
yes


Ex Input:
Sentence 1: i got this cough i've got a cold because it was eighty degrees up here and i went outside with no coat on Sentence 2: Last week it was 80 degrees outside on monday and I went out without a coat.

Ex Output:
no


Ex Input:
Sentence 1: yeah now we've used a hair dryer before Sentence 2: We've never used a hair dryer before.

Ex Output:

yes