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:
bath rugby are a rugby club based in bath, england who play in the aviva premiership.

Ex Output:
bath rugby


Ex Input:
rupert thorne is a fictional batman character, who is the crime boss of batman.

Ex Output:
rupert thorne


Ex Input:
ricardo zamora (21 january 1901 – 15 september 1978) is a former spanish football player.

Ex Output:

ricardo zamora