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: Upper Egypt was the heartland of the Kingdom at the peak of its power and influence, and the remains of its ancient cities form one of the most important and breathtaking archaeological collections in the world. Sentence 2: Upper Egypt was never actually in Egypt.  
Example Output: no

Example Input: Sentence 1: On the previous day, the prisoner had purchased strychnine at the village chemist's shop, wearing a disguise by means of which he hoped to throw the onus of the crime upon another man ”to wit, Mrs. Inglethorp's husband, of whom he had been bitterly jealous.  Sentence 2: The prisoner purchased poison at the village's chemist shop.
Example Output: yes

Example Input: Sentence 1: On inquiry she learnt that Tommy had not yet returned. Sentence 2: After asking, she learned that Tommy had come back yesterday. 
Example Output:
yes