Question: The most populous metropolitan area on earth features an airport bus operator, based at the TCAT which is located where?

Context paragraphs:
Greater Tokyo Area: The Greater Tokyo Area is the most populous metropolitan area in the world, consisting of the Kantō region of Japan, including the Tokyo Metropolis, as well as the prefecture of Yamanashi.  In Japanese, it is referred to by various terms, one of the most common being National Capital Region (首都圏 , Shuto-ken ) .

Dart Buses: Dart Buses were an independent bus operator in the Paisley and Renfrewshire area in the 1990s.  The company is attributed with starting a bus war with the main operator of the area, Clydeside Scottish.  Bus wars were common following bus deregulation, and the Paisley area was no stranger to fierce competition; however Dart Buses predominantly operated along routes of large operators and were more successful and subsequently grew much larger than other independents.  The company collapsed in 2001.

Tokyo City Air Terminal: Tokyo City Air Terminal (東京シティエアターミナル , Tōkyō shiti ea tāminaru ) , also known as T-CAT, is a bus terminal for Airport Transport Service, an airport bus operator, in downtown Tokyo, Japan.  The terminal is located in Nihonbashi-Hakozaki-cho, Chuo-ku, beneath Hakozaki Junction, the three-way interchange for Shuto Expressway Route 6 (Mukojima Route) and Route 9 (Fukagawa Route), three blocks southeast of Suitengu shrine.  T-CAT is a gateway for passengers going to and from Narita International Airport and Tokyo International Airport (Haneda).

KD Transportation Group: KD Transportation group (KD Group,Korean: KD운송그룹 ) is a transportation company based on Daewon Passenger Traffic, mainly does bus transportation.  Company focuses on intercity bus, airport bus, transit bus, tour bus service, and is biggest bus company in South Korea.  This company's all airport bus, intercity bus, tour bus' color is Purple.

NYC Airporter: NYC Airporter is a brand of express bus service that operate express motor coaches between New York metropolitan area airports and Manhattan owned by Golden Touch Transportation of NY, Inc.  It is the only permitted and official operator of express airport bus service for the New York City Department of Transportation and Port Authority of New York and New Jersey (the airports' operator).

Tokyo Cruise Ship: The Tokyo Cruise Ship (東京都観光汽船 , Tōkyō-to Kankō Kisen , "Tokyo Metropolis Sightseeing Ship") is a water bus operator in Tokyo.  Unlike Tokyo Metropolitan Park Association (Tokyo Mizube Line), another water bus operator in Tokyo, Tokyo Cruise Ship is a privately owned company operating public transport.  The services include public lines listed below, as well as event cruises and chartered ships.

RailAir: RailAir describes a number of airport bus and coach services designed to connect the National Rail network to airports in the United Kingdom.  Services are currently concentrated on London Heathrow Airport, with one other from London Luton Airport.  RailAir services are operated as public transport services by or on behalf of train operators, where the whole journey is paid for as a through ticket which combines the railway and bus journey, although journeys can be made using the bus only.  As such, many are operated where the train and bus operator are owned by the same company.

Tompkins Consolidated Area Transit: Tompkins Consolidated Area Transit, Inc., usually referred to as TCAT, is a private, non-profit public transportation operator, created by Cornell University, Tompkins County, and the City of Ithaca to serve Tompkins County, New York.  The vast majority of TCAT bus routes are based in the City of Ithaca and surrounding urban area.  These routes serve Ithaca College, Cornell University, and Tompkins Cortland Community College.

Glasgow Flyer: The Glasgow Flyer was a branded airport bus service in Glasgow, Scotland.  It connected Glasgow Airport to central Glasgow, operating as a shuttle bus via the M8 motorway.  In Glasgow city centre it operated from the Buchanan bus station, also calling at Glasgow's two mainline railway termini.  It was formerly operated under contract to airport operator BAA until 31 December 2010, but the ongoing contract to operate the service was given to First Glasgow from 1 January 2011 and operated as a scheduled Arriva service.  The Glasgow Flyer service was discontinued 31 July 2011.

Airport Transport Service: Airport Transport Service Co., Ltd. (東京空港交通株式会社 , Tōkyō Kūkō Kōtsū Kabushiki-gaisha ) is an airport bus operator in the Greater Tokyo Area of Japan.  It is based at the Tokyo City Air Terminal (TCAT) in Chūō, Tokyo.

Supporting paragraphs: Airport Transport Service Greater Tokyo Area
Answer: Chūō, Tokyo