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.
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Question: maicon douglas sisenando (born 26 july 1981) is a brazilian football player.

Answer: maicon douglas sisenando

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

Answer: valbirse

Question: kournikova sponsored a video game called "anna kournikova's smash court tennis" for the sony playstation in 1999.

Answer:
anna kournikova