Complex sentence: Anthony John "Tony" Soprano, Sr. is an Italian-American (his family immigrated from Avellino, Italy) fictional character and the protagonist on the HBO television drama series "The Sopranos", on which he is portrayed by James Gandolfini.
Split into simpler sentences: Anthony John "Tony" Soprano, Sr. is an Italian-American fictional character. His family immigrated from Avellino, Italy and the protagonist on the HBO television drama series "The Sopranos", on which he is portrayed by James Gandolfini.