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:
commandos are military soldiers who have been highly trained in combat.

Ex Output:
commando


Ex Input:
caledonian stadium is a scottish football stadium.

Ex Output:
caledonian stadium


Ex Input:
jeron criswell king (august 18, 1907 – october 4, 1982), born jeron criswell konig, and known by his stage-name the amazing criswell , was an american psychic known for making wrong predictions.

Ex Output:

the amazing criswell