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 Q]: Sentence 1: (By contrast, Slate 's assessment relies entirely upon sources who are not identified by name.) Sentence 2: The names and origin of Slate's sources are not known.
[EX A]: yes

[EX Q]: Sentence 1: uh and those activities helped a lot in giving us things to do with the children Sentence 2: The activities gave us things to do with the children.
[EX A]: yes

[EX Q]: Sentence 1: Could Kennewick Man have come by a route similar to Ericson's, say via skin boats or over an ice mass connecting North America, Greenland, and Norway? Sentence 2: Kennewick Man came from a 4,000-mile route.
[EX A]:
no