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.

rudolf kargus (born 15 august, 1952) is a former german football player.
rudolf kargus

the wisconsin river is a river in the united states.
wisconsin river

no way out (2001) was a professional wrestling pay-per-view show made by world wrestling federation (wwf).

no way out (2001)