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:
vehari district is a district in the punjab province of pakistan.

Ex Output:
vehari district


Ex Input:
priyanka chopra (born on 18 july 1982 in jamshedpur, bihar, india) is an indian actress, singer and dancer.

Ex Output:
priyanka chopra


Ex Input:
baking is a skill or way of cooking food in an oven.

Ex Output:

baking