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: Vrenna drew her saber and San'doro drew his knives. Sentence 2: Vrenna and San'doro put their weapons away.

Ex Output:
yes


Ex Input:
Sentence 1: He wore a helm shaped like the head of a lion complete with a mane of real fur. Sentence 2: He had fur on his helm.

Ex Output:
yes


Ex Input:
Sentence 1: How can you be sure your programs are safe? Sentence 2: Are you sure of the safety of your programs?

Ex Output:

yes