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:person is wife of person sentence1:person is   person 's wife
Example Output: yes

Example Input: sentence1:organization_founder is offering  location somethingsentence1:location is backing  organization_founder 
Example Output: no

Example Input: sentence1:region is going to war with region sentence1:region is preparing for war with region 
Example Output:
yes