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:region is going to war with region sentence1:region launches attack against region 
Example Output: yes

Example Input: sentence1:region is city of location sentence1:region is centre of location 
Example Output: no

Example Input: sentence1:organization_founder is pointing at organization_founder sentence1:organization_founder is helping  organization_founder 
Example Output:
no