This is the 15195th most frequent Polish word.
sejmu
"Sejmu" is the genitive form of "Sejm," which refers to the lower house of the Polish parliament.
'Sejmu' is in the genitive case, showing possession ('debate in the Sejm').
Rozpoczęła się debata w Sejmu na temat nowego projektu ustawy.
The debate in the Sejm over the new bill proposal has started.
'sejmu' is in the genitive case, modifying 'marszałek' to mean the marshal affiliated with the Sejm.
Marszałek sejmu ogłosił przerwę w obradach.
The marshal of the Sejm announced a break in the session.
'sejmu' is in the genitive case to indicate the works related to the institution of the Sejm.