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.
Input: Sentence 1: As previously noted, if no material variances occur, arrival and departure times and hours worked per day need not be recorded. Sentence 2: It's not unusual for departure hours to be unrecorded if there are no real differences on a particular day.
Output:
yes