Complex sentence: Genta was born in Geneva to an ethnically Swiss mother and father of Piedmontese (Nothern Italian) descent, and at the age of 20, had finished jewelry training in his native Switzerland, earning a Swiss federal diploma.
Split into simpler sentences: Genta was born in Geneva to an ethnically Swiss mother and father of Piedmontese (Northern Italian) descent. At the age of 20, Genta finished jewelry training in his native Switzerland, earning a Swiss federal diploma.