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: Upper Egypt was the heartland of the Kingdom at the peak of its power and influence, and the remains of its ancient cities form one of the most important and breathtaking archaeological collections in the world. Sentence 2: Upper Egypt was never actually in Egypt.

Ex Output:
no

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: You've got to get Tripp to give him the go-ahead. Sentence 2: Tripp's permission is not needed.

Ex Output:
yes