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.

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.
yes

Sentence 1: They were highly skilled in such manual activities as thatching and weaving. Sentence 2: There were no skills.
yes

Sentence 1: On a cost-per-piece basis, city costs are 8 percent lower using actual labor costs and 21 percent lower using the average bargaining labor costs. Sentence 2: City costs have gone up on a cost-per-piece basis if we use actual labor costs.

yes