Complex sentence: The construction of the Gothic building extends across five centuries, from the 15 th to the 19 th, or if the length of the existence of the Romanesque bell tower is included, a total of seven centuries of construction.
Split into simpler sentences: The construction of the Gothic building spreads across five centuries, from the 15 th to the 19 th. Including the time of existence of the Romanesque bell tower, this makes a total of seven centuries of construction.