Complex sentence: Georgette Harvey (1882--1952) was an American singer and actress, perhaps most famous for creating the role of Maria in the original 1935 Broadway production of George Gershwin's opera "Porgy and Bess".
Split into simpler sentences: Georgette Harvey (1882--1952) was an American singer and actress. She is perhaps most famous for creating the role of Maria in the original Broadway production of "Porgy" and the 1935 Broadway production of George Gershwin's opera "Porgy and Bess".