Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

the embassy of russia in copenhagen is the embassy of russia to denmark.
embassy of russia in copenhagen

valbirse is a new municipality of the administrative district of jura bernois in the canton of berne in switzerland.
valbirse

erzurum is a city in eastern anatolia (asian turkey).

erzurum