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: is that a U S territory though Sentence 2: That's a U.S. territory, right?

Ex Output:
yes


Ex Input:
Sentence 1: It's true that coverage of Clinton on the campaign trail has been somewhat softer than the coverage of Dole, as even other Times reporters acknowledge. Sentence 2: Some of the shoreline homes have hot tubs and covered porches. 

Ex Output:
yes


Ex Input:
Sentence 1: The northerner drew a long thin blade from his belt and examined it. Sentence 2: The northerner looked a blade he took out from his boot.

Ex Output:

yes