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.

[Q]: hans nowak (born 9 august, 1937) is a former german football player.
[A]: hans nowak


[Q]: the pseudomonadales are an order of proteobacteria.
[A]: pseudomonadales


[Q]: graham chapman (8 january 1941 – 4 october 1989) was a british actor, comedian and writer.
[A]:
graham chapman