Complex sentence: The Sportsman's Association was formed in 1996 to campaign for the right of sports shooters to own handguns following the Dunblane Massacre when Thomas Hamilton killed 16 children and their teacher using legally held pistols.
Split into simpler sentences: The Sportsman's Association was formed in 1996 to campaign for the right of sports shooters to own handguns. This wa limited following the Dunblane Massacre when Thomas Hamilton killed 16 children and their teacher using legally-held pistols.