This is the 7470th most frequent Swedish word.
stadsbibliotekets
"The city library's" (possessive form).
In this sentence, 'stadsbibliotekets' is used as a possessive form to denote ownership, indicating that the bookshelf belongs to the city library.
Jag glömde min bok på stadsbibliotekets bokhylla.
I forgot my book on the city library's bookshelf.
Here, 'stadsbibliotekets' signifies that the author meeting was hosted or organized by the city library, using a possessive to identify the organizer.
Vi deltog i stadsbibliotekets författarträff igår.
We attended the city library's author meeting yesterday.
In this sentence, 'stadsbibliotekets' is used to describe that the story room is an entity within or pertaining to the city library, showing location-dependent possession.