Complex sentence: The Frankfurter Rindswurst is a sausage made of pure beef meat was introduced to the people of Frankfurt in 1894 by the Frankfurt butcher Gref-Voelsing.
Split into simpler sentences: The Frankfurter Rindswurst is a sausage made of pure beef meat. It was introduced to the people of Frankfurt in 1894 by the Frankfurt butcher Gref-Voelsing.