In this task, you will be given two sentences sentence1 and sentence2. You should decide whether the second sentence is entailed(agreed) by the first sentence. If it does entail, answer "yes", else answer "no".

Example Input: sentence1:employer is disagreeing with book_author sentence1:book_author is challenging  employer 
Example Output: no

Example Input: sentence1:person*politician is serving a mayor of region sentence1:person*politician is Mayor of region 
Example Output: yes

Example Input: sentence1:organization_founder is promising  location sentence1:organization_founder is threatening  location 
Example Output:
no