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:  The old man sighed, his face slumping into lines of fatigue and age. Sentence 2: The man was tired from his old age.
Example Output: yes

Example Input: Sentence 1: This requires establishing a supplier base and purchasing materials. Sentence 2: Many things must be done in order to manufacture a product. 
Example Output:
no