This is the 17816th most frequent Polish word.
zwycięzcami
"Zwycięzcami" means "winners" in English.
In this sentence, 'zwycięzcami' is used as the plural instrumental case form of 'zwycięzcy', meaning 'winners'. It describes the role or identification of the subject 'Oni' (They).
Oni są zwycięzcami zawodów.
They are the winners of the competition.
Here, 'zwycięzcami' is used in the instrumental case following the preposition 'ze', indicating the recipients of the action 'rozmawiać' (to talk).
Od dawna nie rozmawialiśmy ze zwycięzcami.
We haven't talked with the winners for a long time.
In this sentence, 'zwycięzcami' is again used in the instrumental case to denote the role or state assigned to the subject 'ich' (them) through the verb 'ogłoszono' (declared).