Question: Where is the airline of which Azores Airlines is subsidiary based?

Context articles: Azores Airlines destinations
Azores Airlines
Dolphin Energy
Purex Crystals
Lee M. Amaitis
SATA Air Açores
João Paulo II Airport
Africa One
Mesaba Airlines
Cambodia Bayon Airlines

This is a list of the airports served by the Portuguese airline Azores Airlines (as of April 2016):
Azores Airlines, previously known as SATA Internacional, is an Azorean airline based in the municipality of Ponta Delgada, on the island of São Miguel in the autonomous archipelago of the Azores.
 A subsidiary of SATA Air Açores, the airline operates as the international arm of the regional network, connecting the archipelago with Europe and North America, from its hub at João Paulo II International Airport.
Dolphin Energy is a gas company of Abu Dhabi, United Arab Emirates.
 It was established in March 1999 by the Government of Abu Dhabi.
 As of today, Dolphin Energy is owned by Mubadala Development Company, on behalf of the Government of Abu Dhabi, (51% of shares), Total S.A. (24.5%) and Occidental Petroleum (24.5%).
 It as also a subsidiary based in Doha, Qatar.
Purex Crystals are a crystal form in-wash laundry fabric softener developed by Henkel.
 The Dial Corporation, a Henkel subsidiary based in Scottsdale, Arizona, manufactures and distributes the product in North America.
Lee M. Amaitis (born 1949) is an American businessman and philanthropist.
 He is the former chairman and chief executive officer of BGC Partners in London.
 He also serves as the founder, president and chief executive officer of CG Technology, a gambling subsidiary based in Las Vegas, Nevada.
SATA Air Açores is an airline based in São Sebastião, Ponta Delgada in the Azores, Portugal.
 It operates scheduled passenger, cargo and mail services around the Azores.
 It provides its own maintenance and handling services and manages four regional airports.
 Its main base is at João Paulo II Airport, Ponta Delgada.
 It also maintains a subsidiary for mid- and long-haul flights, Azores Airlines, the former "SATA International".
João Paulo II Airport (IATA: PDL, ICAO: LPPD) , named after Pope John Paul II, is an international airport located on the island of São Miguel, in the Portuguese archipelago of the Azores.
 Situated 2 km west of the city centre of Ponta Delgada, it is the primary (and busiest) airport in the Azores, as well as the fifth largest infrastructure managed by ANA Aeroportos de Portugal; with the construction of the terminal in 1995, by 2005 the airport served a total of 873,500 passengers.
 It has scheduled domestic flights to all islands of the Azores, plus Madeira and the mainland, namely (Lisbon, Porto and Faro).
 João Paulo II Airport also accommodates international flights to and from Europe and North America.
 The airport is the major hub for the SATA Group of airlines, which includes both inter-island SATA Air Açores and international Azores Airlines, and since April 2015 as a base for Ryanair.
Africa One was a privately owned pan-African airline.
 It was initially based in Entebbe, Uganda, with aircraft wet leased from Africa One Holdings, registered in Ireland.
 Africa One Congo was a subsidiary based in Kinshasa.
 It is not clear if the same airline or another of the same name was the operator of the An-26 that crashed with high fatality numbers in the DRC in 2007, but most likely it was operated by the company's Congolese subsidiary, because soon after the incident its operations shut down.
 Africa One operated in years 2002-2004 and Africa One Congo operated in years 2002-2007.
Mesaba Aviation, Inc. (operating as Mesaba Airlines) was an American regional airline based in Eagan, Minnesota The airline was a wholly owned subsidiary of Pinnacle Airlines Corporation.
 Its flights operated as Delta Connection for Delta Air Lines and US Airways Express for US Airways.
 Previously, the airline operated as Northwest Airlink and Northwest Jetlink on behalf of Northwest Airlines which subsequently merged with Delta.
 Mesaba Airlines effectively ceased operations on January 4, 2012, when all aircraft and personnel were transitioned to the Pinnacle Airlines operating certificate.
 Mesaba's operating certificate was surrendered on July 31, 2012.
Cambodia Bayon Airlines (Khmer: អាកាសចរណ៍ កម្ពុជា បាយ័ន/បាយ័នអ៊ែរឡាញ ) is an airline based in Phnom Penh, Cambodia.
 Its main hub is at Phnom Penh International Airport.
 The airline is a wholly owned subsidiary of Bayon Airlines Holding Ltd., which is in turn a subsidiary of the Chinese carrier Joy Air.
 It was registered in April 2014.
 The air operator's certificate was received in December 2014; the airline had its inaugural flight on December 31, 2014.
 Cambodia Bayon Airlines' first operational base in Cambodia is Phnom Penh.
 The company also has operational bases in Siem Reap, Sihanoukville and Ho Chi Minh City.