This is the 1660th most frequent Russian word.
новосибирска
"Новосибирска" is the genitive case of "Новосибирск," meaning "of Novosibirsk," referring to something belonging to or related to the city of Novosibirsk.
Here, 'Новосибирска' is in the genitive case, indicating origin.
Я приехал из Новосибирска.
I arrived from Novosibirsk.
In this sentence, 'Новосибирска' is again in the genitive case, used after the preposition 'около' (near).
Он живет около Новосибирска.
He lives near Novosibirsk.
Here, 'Новосибирска' is in the genitive case as per usage in the possessive construction 'Жители города' (Residents of the city).