This is the 7227th most frequent Polish word.
jens
The word "jens" does not exist in Polish.
Here, 'Jens' is used as a proper noun, referring to a person's name.
Jens jest moim przyjacielem.
Jens is my friend.
'Jens' remains a proper noun, here a subject in an inquiry.
Czy Jens w końcu zdecydował się przyjść na imprezę?
Did Jens finally decide to come to the party?
'Jens' functions as a subject who performs the action of mentioning.