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:
miangul aurangzeb (urdu/pashto: ميانگل اووررنگزيب) (28 may 1928 – 3 august 2014) is a pakistani politician.

Ex Output:
miangul aurangzeb


Ex Input:
kappa (uppercase/lowercase Κ κ), is the letter of the greek alphabet, used to represent the "k" sound in ancient and modern greek.

Ex Output:
kappa


Ex Input:
coulandon is a french commune.

Ex Output:

coulandon