This is the 8465th most frequent Polish word.
pomianowskiego
"Pomianowskiego" is the genitive singular form of the Polish surname "Pomianowski," meaning "of Pomianowski" or "related to Pomianowski."
The word "Pomianowskiego" here refers to possession, indicating the house belonging to Pomianowski.
Odwiedziłem dom Pomianowskiego, który jest znanym pisarzem.
I visited Pomianowski's house, who is a known writer.
The word "Pomianowskiego" signifies authorship, suggesting that Pomianowski is the author of the book.
Czy czytałeś książkę Pomianowskiego? Polecam ją.
Have you read Pomianowski's book? I recommend it.
In this sentence, "Pomianowskiego" indicates association or origin, denoting a team associated with Pomianowski.