In this task, you are given a sentence in Polish language and its corresponding English translation. Here, your job is to output label "yes" if the translation is correct, otherwise output "no".

Ex Input:
Polish: główki hydry na końcu.  
 English: all of the little hydra heads at the end. 

Ex Output:
yes


Ex Input:
Polish: na powierzchni naczynia.  
 English: on the surface of this. 

Ex Output:
yes


Ex Input:
Polish: i jest to złote naczynie lub kubek.  
 English: and it is a gold vessel or beaker. 

Ex Output:

yes