Complex sentence: He had two large alabaster urns transported from Pergamon and placed on two sides of the nave in the Hagia Sophia in Constantinople and a large wax candle dressed in tin which was donated by him to the Rila monastery in Bulgaria is on display in the monastery museum.
Split into simpler sentences: He had two large alabaster urns transported from Pergamon and placed on two sides of the nave in the Hagia Sophia in Constantinople. A large wax candle dressed in tin which was donated by him to the Rila monastery in Bulgaria is on display in the monastery museum.