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: Reservations recommended. Sentence 2: make reservations now to save money.
Example Output: no

Example Input: Sentence 1: But the conflict itself might create such a tendency or incentive. Sentence 2: It's possible that the conflict could lead to a tendency or incentive of that sort.
Example Output: yes

Example Input: Sentence 1: The bear is a symbol of Madrid, while the T?­o Pepe sign, an advertisement for one of Spain's most famous brands of sherry, has become the unofficial symbol of the Puerta del Sol. Sentence 2: Madrid uses a bear as its symbol while Puerta del Sol used the Tio Pepe.
Example Output:
yes