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: He began digging in 1900 after buying the site and financing the excavation program with his own money, and almost immediately struck the first building blocks of a huge Bronze Age palace replete with magnificent pottery and other artifacts. Sentence 2: Many archeologists from all over the world traveled to the site.

Ex Output:
no


Ex Input:
Sentence 1: okay well good luck to the Rangers this season  see if they can pull one out Sentence 2: Good luck to the Rangers this season; let's see if they win.

Ex Output:
yes


Ex Input:
Sentence 1: Equity options themselves aren't the problem--they have legitimate uses--and without the ability to lock in positions that equity options offer, certain folks might not be in the equity market in the first place. Sentence 2: Equity options to not have legitimate uses. 

Ex Output:

yes