TASK DEFINITION: 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.
PROBLEM: Sentence 1: It even has a fortified head (cimorro) that is part of the city walls. Sentence 2: Part of the city walls is a fortified head.

SOLUTION: yes

PROBLEM: Sentence 1: One rather formidable group of mailers whose members will benefit mightily from the Commission's recommendations, the periodicals mailers, pointed out in a press statement that the overall average increase for First-Class mail was much smaller than the average increase for mail their members send. Sentence 2: Periodicals mailers never say a word in the press statements.

SOLUTION: yes

PROBLEM: Sentence 1: Not only is he, perhaps, the most celebrated K.C. Sentence 2: He is a very celebrated K.C.

SOLUTION:
yes