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".

Input: Consider Input: Polish: Poćwiczmy jeszcze trochę.  
 English: Let's give ourselves a little bit more practice. 

Output: yes


Input: Consider Input: Polish: jest istotą matematyki  
 English: is the very essence of mathematics 

Output: yes


Input: Consider Input: Polish: w końcu nie mają nawet podstawowych praw  
 English: multiply a times the elimination matrix.


Output: no