Complex sentence: Erik Sven Gunnar Karlsson (born May 31,1990) is a Swedish professional ice hockey player who currently serves as captain of the Ottawa Senators of the National Hockey League (NHL).
Split into simpler sentences: Erik Sven Gunnar Karlsson (born May 31,1990) is a Swedish professional ice hockey player. Karlsson is a member of the Ottawa Senators of the National Hockey League (NHL).