Simplify the following text for a Grade 13 native English-speaking person.
Original: Sylvester Gardenzio Stallone ( born July 6 , 1946 ) , nicknamed Sly Stallone , is an Italian American actor , director , producer and screenwriter .
Simplified: Sylvester Stallone ( stÉ Ë loÊ n ; born July 6 , 1946 ) , nicknamed Sly Stallone , is an American actor , filmmaker , screenwriter , film director and occasional painter .