Question: Where is the headquarters of the airline that owns the Roosevelt Hotel in the city where Emil Gorovets died?

full_context: Document 1: Hard Rock Hotel & Casino Atlantic City: Construction of what was originally known as the Taj Mahal commenced in 1983 by Resorts International, owner of the neighboring Resorts Casino Hotel, with an estimated budget of $250 million. Resorts head James Crosby said it might be named the United States Hotel, in reference to the city's first major hotel.
Document 2: Jozsef Gregor: József Gregor (8 August 1940 - 27 October 2006) was a renowned Hungarian bass-baritone/basso buffo who enjoyed success first in Hungary, then in France, Belgium and Canada, and finally in the United States. József Gregor was born in Rákosliget, a small town that is now part of Budapest. He studied violin for ten years and then, voice at the Liszt Academy in Budapest for one year but did not graduate. He started singing with the Hungarian Army chorus in 1958 before becoming a soloist in National Theatre of Szeged in Hungary. In Europe he sang in many opera houses, including Vlaamse Opera and La Scala in Milan. Beginning in 1989, József Gregor appeared in the US with the Portland Opera and later with the Houston Grand Opera (with Cecilia Bartoli at her American debut) and the Metropolitan Opera (with Bryn Terfel). His most famous roles included Sarastro, Osmin, Falstaff, Don Pasquale, Dulcamara, Don Basilio, Don Bartolo, Don Magnifico, Boris Godunov, Varlaam, Philip II, Bluebeard etc., roles in masses and oratorios, musicals (Tevye, Caiaphas), and songs. He died in Szeged of gastric cancer.
Document 3: Royal Swazi National Airways: Royal Swazi National Airways, which at the time was owned by the Swazi government and Tibiyo Taka Ngwane, a trust managed by King Mswati III, ceased operations to Harare, Lusaka, Dar es Salaam and Nairobi on 12 April 1999 and the Swazi government signed an agreement with SA Airlink on 25 April for the South African airline to take a 40% stake in a new venture, with the government holding the remaining 60%, to be known as Airlink Swaziland. Airlink Swaziland began operations in July 1999 with a Fokker F28 leased from the company.
Document 4: The Roosevelt Hotel (Manhattan): Beginning in 1979, the hotel was leased by the Pakistan International Airlines through its investment arm PIA Investments Ltd. (``PIA ''), with an option to purchase the building after 20 years. Prince Faisal bin Khalid bin Abdulaziz Al Saud of Saudi Arabia was one of the investors in the 1979 deal. In 1999, PIA exercised their option and bought the hotel for $36.5 million, after a legal battle with owner Paul Milstein, who claimed it was worth much more. In 2005, PIA bought out its Saudi partner in a deal that included the prince's share in Hôtel Scribe in Paris in exchange for $40 million and PIA's share of the Riyadh Minhal Hotel (a Holiday Inn located on property owned by the prince). PIA has since controlled 99 percent interest in the hotel, while the Saudis have only 1 percent.
Document 5: Pakistan Aeronautical Complex: After consultation from the PAF's commanders at AHQ at the Pindi Cantt and assistance from the Chinese government, the Pakistan Aeronautical Complex (PAC) was established in 1973 in Kamra with Aircraft Rebuild Factory first being functional. PAC was established by the Pakistan Air Force (PAF) as part of the new defence policy introduced in 1972; the PAC represents wide range of corporate revenue of the air force while fulfilling the national security needs of the country. The Pakistan Aeronautical Complex started with three main Ministry of Defence projects designated P - 721, P - 741 and P - 751. The first two digits show the year of project approval and launch, the third digit is a serial designator.
Document 6: Emil Pollert: Emil Pollert, born Emil Popper (20 January 1877, Liblice at Mělník – 23 October 1935, Prague) was a Czech opera singer at the National Theatre in Prague, in his time the main representative of bass roles.
Document 7: Emil Gorovets: Rahmil "Emil" Yacovlevich Gorovets (in Russian Рахмиль Яковлевич Горовец) (10 June 1923 in Haisyn, Ukraine – 17 August 2001 in New York) was a famous Soviet Ukrainian singer of Jewish origin, Gorovets standing for Horovitz in Russian. Gorovets' voice in between a tenor and baritone, was bright and had lush tonal coloration and emotional interpretations. Besides his hits in Russian, Ukrainian and Yiddish, he was also known to sing European and American famous hits in Russian.
Document 8: Vision Air International: Vision Air International is a passenger and cargo charter airline based at Jinnah International Airport, Karachi, Pakistan. Vision Air International registered as a Private Limited Company in June 2006 and in 2007 had already acquired its Air Charter License for Passenger and Cargo, Domestic and International operations. Having initially operated Boeing 737-200 and -300 passenger aircraft Vision is now primarily focused on air cargo and operates Boeing 737 freighter aircraft. Vision transports the majority of Pakistan’s air courier material on its nightly scheduled flights internally within Pakistan.
Document 9: Dorchester Collection: Dorchester Collection is a luxury hotel operator owned by the Brunei Investment Agency (BIA), an arm of the Ministry of Finance of Brunei. Dorchester Collection owns and manages 9 luxury five star hotels: The Dorchester (London), The Beverly Hills Hotel (Beverly Hills), Plaza Athénée (Paris), Hotel Meurice (Paris), Principe di Savoia (Milan), Hotel Bel-Air (Los Angeles), Coworth Park (southwest of London), 45 Park Lane (London) and Hotel Eden (Rome).
Document 10: Stas Mikhaylov: Stanislav Vladimirovich Mikhaylov (), better known as Stas Mikhaylov (, born 27 April 1969 in Sochi, Russia) is a popular Russian singer and songwriter, Meritorious Artist of the Russian Federation (2010); laureate of Golden Gramophone Award. Stas Mikhaylov reported the highest income of all singers in Russia in 2011 with $20 million and 2012 with $21 million
Document 11: Yaakov Dori: Born in the present day Ukraine (then part of the Russian Empire) as Yakov Dostrovsky (), son of Tzvi and Myriam, his family emigrated to Ottoman Palestine following the anti-Jewish pogrom in Odessa in 1905. Upon completing high school at the Hebrew Reali School in Haifa, he enlisted in the Jewish Legion of the British Army during World War I. Following the war he studied engineering at the University of Ghent. When he returned to Palestine in 1926 he joined the Haganah and adopted the underground name of "Dan". In Haganah he was the commander of the Haganah Forces of Haifa.
Document 12: Empire State Building: As of 2014 the building is owned by the Empire State Realty Trust with Anthony Malkin as Chairman, CEO, and President. Details on the trust's profits are scarce, but it is known that significantly more revenue was earned from tourism than from leasing the office space in 2011. In August 2016, the Qatar Investment Authority (QIA) obtained a 10% share in the Empire State Building through a $622 million investment in the Empire State Realty Trust. The trust's president John Kessler called it an ``endorsement of the company's irreplaceable assets ''. The investment has been described by the real - estate magazine The Real Deal as`` an unusual move for a sovereign wealth fund'', as these funds typically buy direct stakes in buildings rather than real estate companies. Other foreign entities that have a stake in the Empire State Building include investors from Norway, Japan, and Australia.
Document 13: Ispahani Hangar: The Ispahani Hangar is a Pakistan International Airlines wide-body aircraft maintenance hangar at the Jinnah International Airport in Karachi, Pakistan. It was named in honour of Mirza Ahmad Ispahani, the first and longest serving chairman of Pakistan International Airlines (PIA). The hangar for wide body and narrow body aircraft with a supporting airframe overhaul shop was completed and commissioned in 1968.
Document 14: Mumbai: The Chhatrapati Shivaji International Airport (formerly Sahar International Airport) is the main aviation hub in the city and the second busiest airport in India in terms of passenger traffic. It handled 36.6 million passengers and 694,300 tonnes of cargo during FY 2014–2015. An upgrade plan was initiated in 2006, targeted at increasing the capacity of the airport to handle up to 40 million passengers annually and the new terminal T2 was opened in February 2014.The proposed Navi Mumbai International airport to be built in the Kopra-Panvel area has been sanctioned by the Indian Government and will help relieve the increasing traffic burden on the existing airport.The Juhu Aerodrome was India's first airport, and now hosts the Bombay Flying Club and a heliport operated by state-owned Pawan Hans.
Document 15: Economy of Islamabad: Most of Pakistan's state-owned companies like Pakistan International Airlines, PTV, PTCL, OGDCL, and Zarai Taraqiati Bank Ltd. are based in Islamabad. The city is home to many branches of Karachi-based companies, banks, and TV channels. Headquarters of all major telecommunication operators such as PTCL, Mobilink, Telenor, Ufone, China Mobile and are located in Islamabad.
ground_truth: Jinnah International Airport
sub_queries: Emil Gorovets >> place of death Answer: New York
who owns the roosevelt hotel in New York Answer: Pakistan International Airlines
Pakistan International Airlines >> headquarters location Answer: Jinnah International Airport