Complex sentence: During his patriarchate in 1941 a great fire destroyed the Patriarchal Palace in Fanari, a new Palace was erected in 1989 by P. Aggelopoulos.
Split into simpler sentences: During his patriarchate in 1941 a great fire destroyed the Patriarchal Palace in Fanari. A new Palace was erected in 1989 by P. Aggelopoulos.