Question: What island houses the headquarters of Hong Kong's main airport?
Context: Hong Kong House, also known since 1995 as the Hong Kong Economic and Trade Office, Sydney, is a landmark heritage building and former hotel in the Sydney central business district.  Built in 1891 to a design by Ambrose Thornley, it is located on 80 Druitt Street, at the corner with York Street, and is adjacent to other prominent heritage landmarks, the Sydney Town Hall and the Queen Victoria Building.  In addition to the Hong Kong Economic and Trade Office, Hong Kong House also houses the office of the Hong Kong Tourism Board in Australasia, Invest Hong Kong and the office of the Hong Kong Trade Development Council. The Back Door was an anonymous work of invasion literature serialised in Hong Kong newspaper "The China Mail" from 30 September through 8 October 1897.  The work, written in the form of a historical account, describes an imagined Russian and French landing at Hong Kong's Deep Water Bay, followed by shelling of Victoria Peak, a sea battle in the Sulphur Channel between Hong Kong Island and Green Island, and a last stand at Stonecutters Island in which British forces were decisively defeated.  The story was intended as a criticism of the lack of British funding for the defence of Hong Kong; fears of invasion were driven by French expansionism in Southeast Asia and increasing Russian influence in Manchuria.  It was speculated, but never proven, that members of the Imperial Japanese Army read the book in preparation for the 1941 Battle of Hong Kong, in which Japanese forces overran Hong Kong (via the New Territories, rather than Hong Kong Island) in just 18 days.  In terms of its style, it follows the model laid out by George Tomkyns Chesney's "The Battle of Dorking", but is noteworthy for its attention to detail, even giving real names of individual soldiers and ships; one reviewer described it as "unique" in its verisimilitude, stating that only William Le Queux's "The Invasion of 1910" and Cleveland Moffett's "" could compare to it. After the First Opium War in 1842, China ceded Hong Kong Island to Britain under the Nanking Treaty.  Subsequently in 1898, China leased the lands surrounding Hong Kong Island which includes the New Territories, the Kowloon peninsula and outlying islands to Britain rent free for 99 years under the Convention for the Extension of Hong Kong Territory following China's defeat in the First Sino Japanese War.  These unequal treaties has granted Britain the power to colonise the whole of Hong Kong.  Even though Hong Kong was eventually handed back to China at the handover in 1997, the British culture has remained evident in Hong Kong's way of life in various aspects after more than 150 years of British rule.  In several major aspects such as the education system, language and food culture, the British culture has been so ingrained during the colonial rule that it has become an integral part of Hong Kong culture. Madame Tussauds Hong Kong, part of the renowned chain of wax museums founded by Marie Tussaud of France, is located at the Peak Tower on Hong Kong Island in Hong Kong.  It is the first Madame Tussauds museums in Asia, the other being the Shanghai branch, which opened in 2006 and the third branch at Singapore which opened in 2014.  The Hong Kong branch houses nearly 100 wax figures of internationally known personalities, with Asian figures taking up more than a third of the total, of which sixteen were Hong Kongers.  The wax figures are featured in a range of themed settings such as Hong Kong Glamour, Music Icons, Historical and National Heroes, The Champions and World Premiere. Playhouse Disney Hong Kong is a Playhouse Disney-branded pay cable television channel for viewers in Hong Kong based in Kowloon Peninsula and is available in 3-national languages: English, Cantonese and Chinese.  This channel is only available on Cable TV Hong Kong in Hong Kong on Channel 136, Now TV in Hong Kong on Channel 442 and HKBN bbTV in Hong Kong on Channel 312.  The old name for Playhouse Disney Hong Kong was Disney Channel Asia.  English, Cantonese and Chinese are available 24-hours in daily.  Playhouse Disney Hong Kong's main competitors are Hong Kong Disneyland.  Lindsay Lohan was the ambassador for Playhouse Disney Hong Kong. Hong Kong International Airport (IATA: HKG, ICAO: VHHH) is the main airport in Hong Kong.  It is located on the island of Chek Lap Kok, which largely comprises land reclaimed for the construction of the airport itself.  The airport is also colloquially known as Chek Lap Kok Airport (赤鱲角機場), to distinguish it from its predecessor, the closed Kai Tak Airport. Hong Kong Dragon Airlines Ltd (Chinese: 港龍航空公司), operating brand as Cathay Dragon (Chinese: 國泰港龍航空) and previously as Dragonair, is a Hong Kong-based international regional airline, with its corporate headquarters, Cathay Dragon House, and main hub at Hong Kong International Airport.  As of 30 October 2013, the airline operates a scheduled passenger network to 44 destinations in 13 countries and territories across Asia.  Additionally, the airline has 3 codeshares on routes which are served by partner airlines.  It has an all Airbus fleet of 41 aircraft, consisting of A320s, A321s and A330s. Cathay Dragon is a wholly owned subsidiary of Hong Kong's flag carrier, Cathay Pacific, and is an affiliate member of the Oneworld airline alliance.  The airline was founded on May 24, 1985 by Chao Kuang Piu, the airline's present honorary chairman.  Its maiden flight departed Hong Kong for Kota Kinabalu, Malaysia after being granted an air operator's certificate (AOC) by the Hong Kong Government in July 1985.  In 2010, Dragonair, together with its parent, Cathay Pacific, operated over 138,000 flights, carried nearly 27 million passengers and over 1.80 billion kg of cargo and mail. New Territories () is one of the three main regions of Hong Kong, alongside Hong Kong Island and the Kowloon Peninsula.  It makes up 86.2% of Hong Kong's territory, and contains around half of the population of Hong Kong.  Historically, it is the region described in The Convention for the Extension of Hong Kong Territory.  According to that the territories comprise the mainland area north of the Boundary Street of Kowloon Peninsula and south of the Sham Chun River which is the border between Hong Kong and Mainland China, as well as over 200 outlying Islands including Lantau Island, Lamma Island, Cheung Chau, and Peng Chau in the territory of Hong Kong. The Hong Kong International Airport (“HKIA”), is connected to about 180 destinations, through over 1,000 daily flight by more than 100 airlines.  In order to meet future demand until 2030 and beyond, the Airport Authority Hong Kong (“AAHK”) proposed the expansion of HKIA into a three-runway system (“3RS”) to support the two currently operated runways, through the introduction of Master Plan 2030 (“MP 2030”) in 2011.  Facing a projected increase in air traffic, the Airport Authority Hong Kong promulgated the Hong Kong International Airport Master Plan 2030 on 2 June 2011.  Its main project aimed at expanding the current airport infrastructure to a Third-Runway System to maintain the position of the Hong Kong International Airport as a leading international and regional aviation hub. Cathay Pacific City or Cathay City () is the headquarters of Cathay Pacific at Hong Kong International Airport.
Answer: Chek Lap Kok