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: I should never have thought of that." Sentence 2: That was such a bad idea.
Example Output: no

Example Input: Sentence 1: You can come in at once?" Sentence 2: "If you'd like, you can enter immediately."
Example Output: yes

Example Input: Sentence 1: um-hum there are some Kurds living in Iran Sentence 2: all of the Kurds have moved out of Iran by now
Example Output:
yes