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.

[Q]: Sentence 1: In an attempt to counter a threat from the Saracen Muslims, a new potent religious force from the East, the Byzantine army forcefully enlisted the men of the islands. Sentence 2: The Saracen Muslims would have easily taken over Byzantium if not for the draft.
[A]: no

[Q]: 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.
[A]: yes

[Q]: Sentence 1: But consulting is a self-effacing business, and self-effacement is one thing that Ralph Reed has shown no aptitude for. Sentence 2: Ralph Reed is a master at anything regarding consulting.
[A]:
yes