Complex sentence: The second has a 16th century fountain behind this courtyard and the offices of the Archbishop and Library, which retains all documentation church of the archdiocese of Seville, the oldest dating back to the 14th century.
Split into simpler sentences: The second has a 16th century fountain behind this courtyard. The offices of the Archbishop and the library retain all documentation about the archdiocese of Seville, the oldest documents dating to the 14th century.