Question: Reggio Emilia Cathedral is one of the three main religious buildings in the administrative region that has what city as its capital?

Context articles: Reggio Emilia Cathedral
Stadio Mirabello
Province of Reggio Emilia
Crostolo
Fondazione Manodori
University of Modena and Reggio Emilia
Reggio Emilia railway station
Emilia-Romagna
Brescello
Balsamic vinegar

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.
Stadio Mirabello was a multi-use stadium in Reggio Emilia, Italy.
 It was used mostly for football matches and hosted the home matches of A.C. Reggiana 1919.
 The stadium was able to hold 17,000 people and opened in 1912.
 In 1995 when Stadio Città del Tricolore was opened as "Stadio Giglio" it ceased to host A.C. Reggiana 1919, Brescello, a lower league soccer team, played in Stadio Mirabello for some years, until it become the main Rugby stadium in Reggio Emilia.
 At the end of the 2007/2008 rugby season the agreement between the city of Reggio Emilia and the local rugby team ended.
The Province of Reggio Emilia (Italian: "Provincia di Reggio nell'Emilia" ) is one of the nine provinces of the Italian Region of Emilia-Romagna.
 The capital city, which is the most densely populated comune in the Province, is Reggio Emilia.
The Crostolo is a stream ( a "torrente") in the Province of Reggio Emilia, Emilia-Romagna Region, Italy.
 It starts in the Apennines of the province of Reggio Emilia and flows northwards, passing through the provincial capital, Reggio nell'Emilia until it empties into the River Po near Guastalla.
Fondazione Cassa di Risparmio di Reggio Emilia – Pietro Manodori known as Fondazione Manodori, is a non-profit organization based in Palazzo del Monte, Reggio Emilia, Emilia-Romagna.
 The organization originated from the saving bank of the city (Cassa di Risparmio di Reggio Emilia) found by Pietro Manodori.
The University of Modena and Reggio Emilia (Italian: "Università degli Studi di Modena e Reggio Emilia" ), located in Modena and Reggio Emilia, Emilia-Romagna, Italy, is one of the oldest universities in Italy, founded in 1175, with a population of 20,000 students.
Reggio Emilia (Italian: "Stazione di Reggio Emilia" ) is a railway station serving the city of Reggio Emilia, in the region of Emilia-Romagna, northern Italy.
 The station opened in 1859 and is located on the Milan–Bologna railway, Reggio Emilia–Ciano d'Enza railway, Reggio Emilia–Guastalla railway and Reggio Emilia–Sassuolo railway.
 The train services are operated by Trenitalia and Ferrovie Emilia Romagna.
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.
Brescello ("Barsèl" in the local dialect, "Bersèl" in the Reggio Emilia dialect) is a "comune" (municipality) in the Province of Reggio Emilia in the Italian region Emilia-Romagna, located about 80 km northwest of Bologna and about 25 km northwest of Reggio Emilia.
 As of 31 December 2016, it had a population of 5,621.
Balsamic vinegar (Italian: "aceto balsamico" ) is a very dark, concentrated, and intensely flavoured vinegar made wholly or partially from grape must, originating in Italy.
 The term ""aceto balsamico"" is unregulated, but there are three protected balsamic vinegars: ""Aceto Balsamico Tradizionale di Modena"" (Traditional Balsamic Vinegar of Modena), ""Aceto Balsamico Tradizionale di Reggio Emilia"" (Traditional Balsamic Vinegar of the Emilia Region), and ""Aceto Balsamico di Modena"" (Balsamic Vinegar of Modena).
 The two traditional balsamic vinegars are made the same way from reduced grape must aged for several years in a series of wooden barrels, and are produced exclusively in either the province of Modena or the wider Emilia region surrounding it.
 The names of these two vinegars are protected by the European Union's Protected Designation of Origin, while the usually less expensive Balsamic Vinegar of Modena ("Aceto Balsamico di Modena") is made from grape must blended with wine vinegar, and produced exclusively in either Modena or Reggio Emilia, with a Protected Geographical Indication status.