TASK DEFINITION: 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".
PROBLEM: Polish: na powierzchni naczynia.  
 English: on the surface of this. 

SOLUTION: yes

PROBLEM: Polish: zdaje się nigdy nie skończyć,  
 English: and your class is seemingly never going to end, 

SOLUTION: yes

PROBLEM: Polish: Nie wiem.  
 English: I don't know. 

SOLUTION:
yes