Question: Reggio Emilia Cathedral is one of the three main religious buildings in the administrative region that has what city as its capital?
Related documents: [0]  [DOC] Reggio Emilia Cathedral (Italian: "Duomo di Reggio Emilia; Cattedrale di Santa Maria Assunta" ) is a Roman Catholic cathedral (and one of the three main religious buildings) in Reggio Emilia (Emilia-Romagna, northern Italy). The dedication is to the Assumption of the Virgin Mary. Formerly the episcopal seat of the Diocese of Reggio Emilia, it has been since 1986 that of the Diocese of Reggio Emilia-Guastalla. [END] 
[1]  [DOC] Emilia-Romagna (] ; Emilian and Romagnol: "Emélia-Rumâgna" ) is an administrative Region of Northeast Italy comprising the historical regions of Emilia and Romagna. Its capital is Bologna. It has an area of 22446 km² , and about 4.4 million inhabitants. [END] 
Answer: 
Bologna
Bologna