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:
rosenheim is a city in upper bavaria, germany.

Ex Output:
rosenheim


Ex Input:
platinum is a soft, heavy, white metal.

Ex Output:
platinum


Ex Input:
easyjet airline company limited, styled as easyjet, is a british low cost airline founded in 1995.

Ex Output:

easyjet