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: you know which maybe i'm being a little bit too harsh but but if they need something i buy it for them Sentence 2: I would never buy them anything they need.

Ex Output:
yes


Ex Input:
Sentence 1: Chatterbox will give the Rev. Sentence 2: Chatterbox should be given to the Rev.

Ex Output:
no


Ex Input:
Sentence 1: Essays on the Case Study Method Sentence 2: No essays on the study 

Ex Output:

yes