Complex sentence: Procopio Cutò, or Francesco Procopio dei Coltelli was the Sicilian chef who had learned the culinary business as his career trade, Portinari and, billing himself as a modern Procopius founded in 1686 what has become the oldest extant cafe in Paris, Café Procope.
Split into simpler sentences: Procopio Cutò, or Francesco Procopio dei Coltelli was the Sicilian chef, Portinari. Billing himself as a modern Procopius, he founded in 1686 what has become the oldest extant cafe in Paris, Café Procope.