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:
louis meyers (1955 or 1956 – march 11, 2016) was a american festival organizer and co-founder of south by southwest.

Ex Output:
louis meyers


Ex Input:
the mini estadi (english: mini stadium) is the home stadium of fc barcelona b, the reserve team of fc barcelona.

Ex Output:
mini estadi


Ex Input:
the marbled cat ("pardofelis marmorata") is a small wild cat of south and southeast asia.

Ex Output:

marbled cat