Complex sentence: Ontario's Lieutenant Governor presently uses an office and suite of rooms for entertainment at the Ontario Legislature, Queen's Park, and lives in his or her private Toronto home, or is provided a rented residence by the Governor-in-Council.
Split into simpler sentences: Ontario's Lieutenant Governor presently uses an office and suite of rooms for entertainment at the Ontario Legislature, Queen's Park. The vice-regal lives in his or her private home if he or she already owns such in Toronto, or is provided a rented residence by the Governor-in-Council.