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: Although your journey is going to be difficult and at times you will doubt yourselves, the benefits to clients are well worth it and the satisfaction of hearing even the most recalcitrant of adversaries say that the new system is better than the one that went before is deeply rewarding. Sentence 2: Your journey is going to be difficult and complex and by Friday afternoon you'll hate yourself; its's not worth it.

Ex Output:
yes


Ex Input:
Sentence 1: For admission to its two great mosques buy a ticket at the booth by the foot of the steps. Sentence 2: You can also buy tickets there for other exhibits.

Ex Output:

no