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:
the division of hughes is an australian electoral division in new south wales.

Ex Output:
division of hughes


Ex Input:
chogolisa is a 7665 m mountain in the karakoram range, in pakistan.

Ex Output:
chogolisa


Ex Input:
stefan demert (15 december 1939 – 9 july 2018) was a swedish singer-songwriter and musician.

Ex Output:

stefan demert