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: Post ies, on the other hand, obsess on the Times . Last month at the Post 's annual Pugwash editorial retreat, outgoing Managing Editor Robert Kaiser began his speech with the preposterous boast that the Post , with a staff half the size of the Times ', does more for its readers, day in and day out. Sentence 2: Editor Kaiser boasted that the Post was more efficient than the Times.
Output:
yes