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.

[EX Q]: the gandaki river is one of the major rivers of nepal.
[EX A]: gandaki river

[EX Q]: yu gamdong (, ?
[EX A]: yu gamdong

[EX Q]: lysekil municipality is a municipality in västra götaland county in southern sweden.
[EX A]:
lysekil municipality