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.

Input: Consider Input: nexon corporation is a korean gaming corporation and developer of online games and mmorpgs.

Output: nexon


Input: Consider Input: carl-henning pedersen (23 september 1913 – 20 february 2007) was a danish painter and a key member of the cobra movement which existed from 1948 to 1951.

Output: carl-henning pedersen


Input: Consider Input: norm coleman (born august 17, 1949) is an american politician.


Output: norm coleman