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.

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

eugenio bersellini (10 june 1936 – 17 september 2017) was an italian football player and manager.
eugenio bersellini

thalassaemia (or thalassemia) is a genetic disorder of the blood which originated in the mediterranean region.

thalassaemia