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: Be sure to get the manufacturer's guarantee stamped or signed if you buy a watch. Sentence 2: Without a stamped or sign manufacturer's guarantee you will run into issues later on.
Output:
no