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.

Input: Consider Input: Sentence 1: She's still working on it, a Pentagon source tells me. Sentence 2: She's working on it, but not very hard.

Output: no


Input: Consider Input: Sentence 1: uh and those activities helped a lot in giving us things to do with the children Sentence 2: The activities gave us things to do with the children.

Output: yes


Input: Consider Input: Sentence 1: Originally the post was simply an inter-city letter service. Sentence 2: The post used to be just for inter-city communications.


Output: yes