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:
this page lists the winners and nominees for the bafta award for best short film for each year.

Ex Output:
bafta award for best short film

Ex Input:
island of the blue dolphins is an american book written for children by scott o'dell.

Ex Output:
island of the blue dolphins

Ex Input:
nefastus dies is a canadian black and death metal band from montreal, quebec.

Ex Output:
nefastus dies