Complex sentence: Patrick James "Whitey" Stapleton (born July 4,1940) is a retired Canadian ice hockey defenceman who played 15 seasons in the National Hockey League and the World Hockey Association, most notably for the Chicago Black Hawks.
Split into simpler sentences: Patrick James "Whitey" Stapleton (born July 4,1940) is a Canadian ice hockey former professional ice hockey player. A defenceman, Stapleton played 15 seasons in the National Hockey League (NHL) and the World Hockey Association (WHA), most notably for the Chicago Black Hawks.