You will be given a definition of a task first, then some input of the task.
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: The vertical structure of REMSAD covers the whole troposphere from the surface up to about 15 km. Sentence 2: The horizontal structure does not cover the surface.
Output:
yes