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.

Example Input: Sentence 1: Fruit, rum, and spices were once transported from the old docks, but in recent years the harbor area has been transformed. Sentence 2: The harbor area is now a large tourist draw. 
Example Output: no

Example Input: Sentence 1: But there are plenty of things for dollar-wielding visitors to buy now that private enterprise is permitted on a limited scale. Sentence 2: Private enterprise is not permitted.
Example Output: yes

Example Input: Sentence 1: However, they noted that more detailed guidelines often provided answers to employees' questions and served as a tool for educating subordinate security managers and others who wanted a more thorough understanding of good security practices. Sentence 2: According to them, detailed guidelines are utterly useless in educating security managers.
Example Output:
yes