This is the 12097th most frequent Polish word.
lubelscy
"Lubelscy" means "the Lubelski family" or "Lubelski" in the plural form, referring to people from the Lubelski family or connected to Lublin, Poland.
In this sentence, 'Lubelscy' refers to members of a family, indicating a plural possessive surname usage, functioning as the subject of the sentence.
Lubelscy mieli talent artystyczny, więc założyli własną galerię sztuki.
The Lubelscy family possessed artistic talent, so they established their own art gallery.
Here, 'lubelskich' refers to individuals originating from or associated with the region of Lublin, being used as an adjective describing the noun 'farmers' ('rolników').
Mieszkańcy wioski chwalili lubelskich rolników za ich ciężką pracę.
The villagers praised the farmers from Lublin for their hard work.
In this case, 'lubelskich' acts as an adjective agreeing with the noun 'uliczkach' (streets), signifying their relation to Lublin.