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 Input:
george clifton james (may 29, 1920 – april 15, 2017) was a retired american actor.

Ex Output:
clifton james


Ex Input:
blairlogie is at the base of the great cliff of dumyat between stirling and menstrie was one of central scotland's earliest conservation villages.

Ex Output:
blairlogie


Ex Input:
henan is a province of the people's republic of china.

Ex Output:

henan