Complex sentence: A sink hole incident at Blyvoorouitsig in 1964 claimed the lives of a whole family as the house they were sleeping in suddenly disappeared, a memorial stone to them also was erected on the site.
Split into simpler sentences: A sink hole incident at Blyvooruitsig in 1964 claimed the lives of a whole family as the house they were sleeping in suddenly disappeared. A memorial stone to them also was erected on the site.