Complex sentence: The exhibition was dominated by such American Photorealists as Ralph Goings, Chuck Close, Don Eddy, Robert Bechtle and Richard McLean; but it included such influential European artists as Gnoli, Richter, Klapheck and Delcol.
Split into simpler sentences: The exhibition was primarily made up of American Photorealists, such as Ralph Goings, Chuck Close, Don Eddy, Robert Bechtle and Richard McLean. It also included important European influential artists such as Gnoli, Richter, Klapheck and Delcol.