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".

Ex Input:
sentence1:region is firing at region sentence1:region is   region 's enemy

Ex Output:
yes


Ex Input:
sentence1:person is trying to link person sentence1:person is taking  person 

Ex Output:
no


Ex Input:
sentence1:location is ally with location sentence1:location is signing treaty with location 

Ex Output:

no