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".

Input: Consider Input: sentence1:organization_founder is   organization_member 's presidentsentence1:organization_founder is President of organization_member 

Output: yes


Input: Consider Input: sentence1:employer is disagreeing with book_author sentence1:book_author is challenging  employer 

Output: no


Input: Consider Input: sentence1:location is being invaded by location sentence1:location is sending to location 


Output: yes