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]: vitoria-gasteiz is the basque country capital.
[EX A]: vitoria-gasteiz

[EX Q]: stenungsund is an urban area in the county of vastra gotaland in sweden.
[EX A]: stenungsund

[EX Q]: kazuma watanabe ( , watanabe kazuma, born) is a japanese football player.
[EX A]:
kazuma watanabe