Complex sentence: The officially designated district does not include Yonge Street, where the Elgin/Wintergarden Theatres, Ed Mirvish Theatre, Panasonic Theatre and Massey Hall are located, nor does it include the St. Lawrence Centre or the Sony Centre.
Split into simpler sentences: The officially designated district does not include Yonge Street, where the Elgin/Wintergarden Theatres, Ed Mirvish Theatre, Panasonic Theatre and Massey Hall are. Nor does it include the St. Lawrence Centre or the Sony centre.