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.

Example Input: mae west (august 17, 1893 – november 22, 1980) was an american actress and movie star.
Example Output: mae west

Example Input: the melbourne storm are an australian professional rugby league team.
Example Output: melbourne storm

Example Input: blake and the aliens is an american tv show by marathon media and nickelodeon.
Example Output:
blake and the aliens