This is the 7189th most frequent Polish word.
janasem
"Janasem" is not a standard Polish word; it may be a misspelling or a proper noun.
Here, 'Janasem' is the instrumental case of the surname 'Janas,' showing that the speaker interacted with the named individual in the given location.
Wczoraj spotkałem się z Janasem w kawiarni.
Yesterday I met Janas at the cafe.
In this example, 'Janasem' indicates the person with whom the conversation took place, using the instrumental case to denote relational interaction.
Rozmawiałem z Janasem o projekcie.
I talked to Janas about the project.
Here, 'Janasem' again uses the instrumental case to specify the person collaborating with the speaker on a particular activity.