Question:  Magnano in Riviera is a "comune" and one of how many regions of Italy?

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Mourvèdre: Mourvèdre (also known as Mataró or Monastrell) is a red wine grape variety that is grown in many regions around the world including the Rhône and Provence regions of France, the Valencia and Jumilla "denominaciones de origen" of Spain, California and Washington State and the Australian regions of South Australia and New South Wales, as well as South Africa.  In addition to making red varietal wines, Mourvèdre is a prominent component in "GSM" (Grenache, Syrah, and Mourvèdre) blends.  The variety is also used to make rosé and port-style fortified wines.

Trolleybuses in Sanremo: The Sanremo trolleybus system or San Remo trolleybus system (Italian: "Rete filoviaria di Sanremo" ), also known as the Italian Riviera trolleybus (Italian: "Filovia della Riviera dei Fiori" ), is focused on the town and "comune" of Sanremo, in the region of Liguria, northwestern Italy.

Friuli-Venezia Giulia: Friuli-Venezia Giulia (] ; Friulian: "Friûl–Vignesie Julie" , Slovene: "Furlanija–Julijska krajina" , German: "Friaul–Julisch Venetien" ) is one of the 20 regions of Italy, and one of five autonomous regions with special statute.  The regional capital is Trieste.  Note that Venezia, i.e. Venice, is "not" in this region, despite the name.

Caucasian Riviera: Caucasian Riviera is located along the eastern coast of the Black Sea under the Caucasus Mountains.  It runs from Novorossiysk, Russia to Sarpi, Georgia.  The area is divided into five regions, of which four (Adjara, Guria, Samegrelo, and Abkhazia) are located in Georgia, and one (the Black Sea coast of Krasnodar Krai) is in Russia.  Caucasian Riviera is 600 km long, 350 km of which belongs to Russia and 250 km to Georgia.  The coast is located on the same latitude as the French Riviera, the Italian Riviera, New York City and the Korean Peninsula.

Senna italica: Senna italica, the Port Royal senna, Italian senna, or Senegal senna is a legume tree in the genus "Senna".  It is recognized by many other common names based on the regions it grows in.  In India, it is used to produce a powder used to treat hair which is known as “neutral henna”.  Senegal senna is easily distinguishable through its many distinctive features.  There are 3 subspecies of this plant based on the size of the inflorescence and the length of the petiole.  The subspecies are "italica", "micrantha", and "arachoides".  In many regions, this plant is cultivated commercially and medicinally.

Personal radio service: A personal radio service is any system that allows individual to operate radio transmitters and receivers for personal purposes with minimal or no special license or individual authorization.  Personal radio services exist around the world and typically use light-weight walkie talkie portable radios.  The power output, antenna size, and technical characteristics of the equipment are set by regulations in each country.  Many regions (for example, the European Union) have standardized personal radio service rules to allow travelers from one country to use their equipment in another country.  Examples of standardized services include PMR446 and FM Citizens Band Radio (CB) in the EU and several other countries/regions.  26–27 MHz CB radio is the oldest personal radio service and is used in nearly every country worldwide, with many countries and regions copying the United States 40-channel frequency plan.  In many countries, CB radio is less popular due to the availability of other personal radio services that offer shorter antennas, better protection from noise and interference.

List of Asian regions with alternative names: Many regions and provinces of Asia have alternative names in different languages.  Some regions have also undergone name changes for political or other reasons.  This article lists Asian regions, provinces, or territories that are referred to by more than one name in English.  It also includes some lesser regions that are important because of their location or history.

Magnano (disambiguation): Magnano is a comune (municipality) in the Province of Biella, Italy

San Secondo (Magnano): The church of San Secondo di Magnano is built in a wide open space near the Serra d'Ivrea, not far from the Bose monastic community, in the comune ("municipality") of Magnano, Italy.  It is one of the most interesting examples of the Romanesque architecture in the Provincia di Biella and the Canavese.

Magnano in Riviera: Magnano in Riviera is a "comune" (municipality) in the Province of Udine in the Italian region Friuli-Venezia Giulia, located about 80 km northwest of Trieste and about 20 km northwest of Udine.  As of 31 December 2004, it had a population of 2,322 and an area of 8.5 km2 .

Supporting paragraphs: Magnano in Riviera Friuli-Venezia Giulia
Answer: 20