Complex sentence: The Alfa Romeo Pandion is a concept car premiered at the 2010 Geneva Motor Show, its designed by Stile Bertone and main responsibility was given to Jason Castriota.
Split into simpler sentences: The Alfa Romeo Pandion is a concept car which premiered at the 2010 Geneva Motor Show. It was designed by Stile Bertone and the main responsibility was given to Jason Castriota.