Question: Thiepval Barracks is located in a city that is part of what metropolitan area?

Context paragraphs:
Milwaukee metropolitan area: The Milwaukee metropolitan area (also known as Metro Milwaukee or Greater Milwaukee) is a major metropolitan area located in Southeastern Wisconsin, consisting of the city of Milwaukee and the surrounding area.  There are several definitions of the area, including the Milwaukee–Waukesha–West Allis metropolitan area and the Milwaukee–Racine–Waukesha combined statistical area.  It is the largest metropolitan area in Wisconsin, and the 39th largest metropolitan area in the United States.

Tri-Cities metropolitan area: The Kennewick–Richland, WA Metropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of Benton and Franklin Counties in Washington State, anchored by the cities of Kennewick, Pasco, and Richland (The Tri-Cities).  As of April 1, 2017, the Washington State Office of Financial Management, Forecasting Division estimates the population of the metropolitan area to be 283,830, making it the fourth-largest metropolitan area in Washington, after Seattle-Tacoma, Spokane, and Vancouver (Part of the Portland metropolitan area).  Although located outside of the Metropolitan area, the CDP (Census-designated place) of Burbank, is generally considered to be part of the Tri-Cities area.

BFBS Lisburn: British Forces Broadcasting Service radio in Northern Ireland is based at Thiepval Barracks, Lisburn.  BFBS Northern Ireland is available on 1287 AM in military Bases across the Province & on 100.6 FM in the Lisburn city area.

Quad Cities Metropolitan Area: The Quad Cities Metropolitan Area, more formally known as the Davenport-Moline-Rock Island Metropolitan Statistical Area is the metropolitan area associated with the Quad Cities and its suburbs in northwest Illinois and southeast Iowa.  The Quad Cities Metropolitan Area is also considered part of the Great Lakes Megalopolis, and is the largest Metropolitan Area along the Mississippi River in Iowa and between Minneapolis–Saint Paul and the St. Louis metropolitan area.  The Davenport-Moline-Rock Island Metropolitan Statistical Area consists of four counties: Scott County in Iowa and Henry, Mercer, and Rock Island counties in Illinois.  The Quad City Metro population as of a 2013 estimate is 383,681 and a CSA population of 474,937, making it the 90th largest CSA in the nation.

Laredo–Nuevo Laredo: The Laredo–Nuevo Laredo Metropolitan Area (UN/LOCODE: USLRD & MXNLD) is one of six bi-national metropolitan areas along the United States-Mexican border.  The city of Laredo is situated in the American state of Texas on the northern bank of the Rio Grande and Nuevo Laredo is located in the Mexican State of Tamaulipas in the southern bank of the river.  This metropolitan area is also known as the Two Laredos or the Laredo Borderplex.  The metropolitan area is made up of one county: Webb County in Texas and three municipalities: Nuevo Laredo Municipality in Tamaulipas, Hidalgo Municipality in Coahuila, Anáhuac Municipality in Nuevo León in Mexico.  Two urban areas: the Laredo Metropolitan Statistical Area and the Zona Metropolitana Nuevo Laredo (Nuevo Laredo Metropolitan Zone) three cities and 12 towns make the Laredo–Nuevo Laredo Metropolitan area which has a total of 636,516 inhabitants according to the INEGI Census of 2010 and the United States Census estimate of 2010.  The Laredo–Nuevo Laredo is connected by four International Bridges and an International Railway Bridge.  According to World Gazetteer this metropolitan area ranked 157th largest in North and South America in 2010 with an estimated population of 775,481.  This area ranks 66th in the United States and 23rd in Mexico.

Thiepval Barracks: Thiepval Barracks in Lisburn, County Antrim, is the headquarters of the British Army in Northern Ireland and its 38th (Irish) Brigade.

Las Vegas–Paradise, NV MSA: The Las Vegas–Paradise, NV MSA, also known as the Las Vegas–Henderson–Paradise, NV Metropolitan Statistical Area (2013), is in the southern part of the U.S. state of Nevada, coextensive since 2003 with Clark County, Nevada.  A central part of the metropolitan area is the Las Vegas Valley, a 600 sqmi basin that includes the metropolitan area's largest city, Las Vegas as well as the other primary city, Paradise, Nevada.  The area contains the largest concentration of people in the state.  Cities in the metropolitan area include Las Vegas, Henderson, North Las Vegas, and Boulder City.  The metropolitan area is one of the top tourist destinations in the world, drawing over 40 million international and domestic visitors in 2013 with a GMP of US$103.3 billion.

HMS Hibernia (shore establishment): HMS "Hibernia" is the name given to a shore establishment of the Royal Navy, which serves as the headquarters of the Royal Naval Reserve in Northern Ireland.  Commissioned in 2009 to replace the C-class cruiser HMS "Caroline" as the training establishment for the RNR in Northern Ireland, "Hibernia" is located as part of Thiepval Barracks in Lisburn, County Antrim.  The unit numbers approximately 100 officers and ratings.

Lisburn: Lisburn ( or ; from Irish: "Lios" , meaning "fort" + Scots "burn", meaning "stream"; "fort of the stream") is a city in Northern Ireland.  It is 8 mi southwest of Belfast city centre, on the River Lagan, which forms the boundary between County Antrim and County Down.  Lisburn is part of the Belfast Metropolitan Area.  It had a population of 71,465 people in the 2011 Census.

Chinese Americans in New York City: The New York metropolitan area is home to the largest ethnic Chinese population outside of Asia, constituting the largest metropolitan Asian American group in the United States and the largest Asian-national metropolitan diaspora in the Western Hemisphere.  This population enumerates an estimated 812,410 uniracial individuals as of 2015, including at least 12 Chinatowns in the metropolitan area.  Six Chinatowns (or nine, including the emerging Chinatowns in Corona and Whitestone, Queens, and East Harlem, Manhattan) are located in New York City proper, and one each is located in Nassau County, Long Island; Edison, New Jersey; and Parsippany-Troy Hills, New Jersey.  This excludes fledgling ethnic Chinese enclaves emerging throughout the New York metropolitan area, such as Jersey City, New Jersey; China City of America in Sullivan County, New York; and "Dragon Springs" in Deerpark, Orange County, New York.  The Chinese American community in the New York metropolitan area is rising rapidly in population as well as economic and political influence.

Supporting paragraphs: Thiepval Barracks Lisburn
Answer: Belfast Metropolitan Area