paragraph_text: There are 47 public airports in Spain. The busiest one is the airport of Madrid (Barajas), with 50 million passengers in 2011, being the world's 15th busiest airport, as well as the European Union's fourth busiest. The airport of Barcelona (El Prat) is also important, with 35 million passengers in 2011, being the world's 31st-busiest airport. Other main airports are located in Majorca (23 million passengers), Málaga (13 million passengers), Las Palmas (Gran Canaria) (11 million passengers), Alicante (10 million passengers) and smaller, with the number of passengers between 4 and 10 million, for example Tenerife (two airports), Valencia, Seville, Bilbao, Ibiza, Lanzarote, Fuerteventura. Also, more than 30 airports with the number of passengers below 4 million.

paragraph_text: Melbourne has four airports. Melbourne Airport, at Tullamarine, is the city's main international and domestic gateway and second busiest in Australia. The airport is home base for passenger airlines Jetstar Airways and Tiger Airways Australia and cargo airlines Australian air Express and Toll Priority; and is a major hub for Qantas and Virgin Australia. Avalon Airport, located between Melbourne and Geelong, is a secondary hub of Jetstar. It is also used as a freight and maintenance facility. Buses and taxis are the only forms of public transport to and from the city's main airports. Air Ambulance facilities are available for domestic and international transportation of patients. Melbourne also has a significant general aviation airport, Moorabbin Airport in the city's south east that also handles a small number of passenger flights. Essendon Airport, which was once the city's main airport also handles passenger flights, general aviation and some cargo flights.

paragraph_text: After Cameron retires, Keating hires Roark, whom Francon soon fires for refusing to design a building in the classical style. Roark works briefly at another firm, then opens his own office but has trouble finding clients and closes it down. He gets a job in a granite quarry owned by Francon. There he meets Francon's daughter Dominique, a columnist for The New York Banner, while she is staying at her family's estate nearby. They are immediately attracted to each other, leading to a rough sexual encounter that Dominique later calls a rape. Shortly after, Roark is notified that a client is ready to start a new building, and he returns to New York. Dominique also returns to New York and learns Roark is an architect. She attacks his work in public, but visits him for secret sexual encounters.

paragraph_text: Southern California is home to Los Angeles International Airport, the second-busiest airport in the United States by passenger volume (see World's busiest airports by passenger traffic) and the third by international passenger volume (see Busiest airports in the United States by international passenger traffic); San Diego International Airport the busiest single runway airport in the world; Van Nuys Airport, the world's busiest general aviation airport; major commercial airports at Orange County, Bakersfield, Ontario, Burbank and Long Beach; and numerous smaller commercial and general aviation airports.

paragraph_text: Oklahoma's largest commercial airport is Will Rogers World Airport in Oklahoma City, averaging a yearly passenger count of more than 3.5 million (1.7 million boardings) in 2010. Tulsa International Airport, the state's second largest commercial airport, served more than 1.3 million boardings in 2010. Between the two, six airlines operate in Oklahoma. In terms of traffic, R. L. Jones Jr. (Riverside) Airport in Tulsa is the state's busiest airport, with 335,826 takeoffs and landings in 2008. In total, Oklahoma has over 150 public-use airports.

paragraph_text: Calicut International Airport , also known as Karipur Airport, is an international airport serving the cities of Kozhikode and Malappuram in Kerala, India. The airport opened on 13 April 1988. It is located in Karipur, about from Kozhikode and from Malappuram. The airport serves as an operating base for Air India Express. It was the twelfth-busiest airport in India in terms of overall passenger traffic. It is the third-busiest airport in Kerala after Kochi and Thiruvananthapuram. It was given international airport status on 2 February 2006.

paragraph_text: Mexico City is served by Mexico City International Airport (IATA Airport Code: MEX). This airport is Latin America's second busiest and one of the largests in traffic, with daily flights to United States and Canada, mainland Mexico, Central America and the Caribbean, South America, Europe and Asia. Aeroméxico (Skyteam) is based at this airport, and provide codeshare agreements with non-Mexican airlines that span the entire globe. In 2014, the airport handled well over 34 million passengers, just over 2 million more than the year before. This traffic exceeds the current capacity of the airport, which has historically centralized the majority of air traffic in the country. An alternate option is Lic. Adolfo López Mateos International Airport (IATA Airport Code: TLC) in nearby Toluca, State of Mexico, although due to several airlines' decisions to terminate service to TLC, the airport has seen a passenger drop to just over 700,000 passengers in 2014 from over 2.1 million passengers just four years prior.

paragraph_text: 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.

paragraph_text: Orly Airport, located in the southern suburbs of Paris, replaced Le Bourget as the principal airport of Paris from the 1950s to the 1980s. Charles de Gaulle Airport, located on the edge of the northern suburbs of Paris, opened to commercial traffic in 1974 and became the busiest Parisian airport in 1993. Today it is the 4th busiest airport in the world by international traffic, and is the hub for the nation's flag carrier Air France.  Beauvais-Tillé Airport, located 69 km (43 mi) north of Paris' city centre, is used by charter airlines and low-cost carriers such as Ryanair.

paragraph_text: The primary city airport is George Bush Intercontinental Airport (IAH), the tenth-busiest in the United States for total passengers, and twenty eighth-busiest worldwide. Bush Intercontinental currently ranks fourth in the United States for non-stop domestic and international service with 182 destinations. In 2006, the United States Department of Transportation named IAH the fastest-growing of the top ten airports in the United States. The Houston Air Route Traffic Control Center stands on the George Bush Intercontinental Airport grounds.

paragraph_text: Oklahoma City is served by two primary airports, Will Rogers World Airport and the much smaller Wiley Post Airport (incidentally, the two honorees died in the same plane crash in Alaska) Will Rogers World Airport is the state's busiest commercial airport, with over 3.6 million passengers annually. Tinker Air Force Base, in southeast Oklahoma City, is the largest military air depot in the nation; a major maintenance and deployment facility for the Navy and the Air Force, and the second largest military institution in the state (after Fort Sill in Lawton).

paragraph_text: In 2017, Guangzhou Baiyun International Airport was China's third-busiest and world's 13th-busiest airport by passenger traffic, with 65,806,977 passengers handled. As for cargo traffic, the airport was China's third-busiest and the 19th-busiest worldwide. Baiyun airport was also the third-busiest airport in China in terms of aircraft movements.

paragraph_text: This list of metro systems includes electrified rapid transit train systems worldwide. In some cases, metro systems are referred to as subways, U-Bahns or undergrounds. As of October 2014, 157 cities in 55 countries around the world host the approximately 160 metro systems that are listed here. The London Underground first opened as an ``underground railway ''in 1863 and its first electrified underground line opened in 1890, making it the world's first metro system. The metro system with the longest route length is the Shanghai Metro; the busiest one is the Beijing Subway; and the one with the most stations is the New York City Subway.

paragraph_text: Incheon International Airport, opened in March 2001 in Yeongjong island, is now responsible for major international flights. Incheon International Airport is Asia's eighth busiest airport in terms of passengers, the world's fourth busiest airport by cargo traffic, and the world's eighth busiest airport in terms of international passengers in 2014. In 2016, 57,765,397 passengers used the airport.

paragraph_text: Cleveland Hopkins International Airport (IATA: CLE, ICAO: KCLE, FAA LID: CLE) is a public airport located nine miles (14 km) southwest of the central business district of Cleveland, Cuyahoga County, Ohio, United States and adjacent to NASA's Glenn Research Center, one of NASA's ten major field centers. It is the primary airport serving Northeast Ohio, the largest and busiest airport in Ohio, and the 43rd busiest airport in the United States by passenger number. It is also the only airport in Ohio that offers nonstop transatlantic flights to Europe. Greater Cleveland is also served by Burke Lakefront Airport and Akron - Canton Regional Airport. Cleveland Hopkins and Cleveland Burke Lakefront Airport together comprise the Cleveland Airport System, operated by the City of Cleveland's Department of Port Control.

paragraph_text: Leonardo da Vinci International Airport (Italian: Fiumicino -- Aeroporto Internazionale Leonardo da Vinci) (IATA: FCO, ICAO: LIRF) or simply Rome Fiumicino Airport, also known as just Fiumicino Airport, is an international airport in Rome and the major airport in Italy. It is one of the busiest airports in Europe by passenger traffic with 41.7 million passengers served in 2016. It is located in Fiumicino, 18.9 nautical miles (35.0 km; 21.7 mi) west of Rome's historic city centre.

paragraph_text: New York's airspace is the busiest in the United States and one of the world's busiest air transportation corridors. The three busiest airports in the New York metropolitan area include John F. Kennedy International Airport, Newark Liberty International Airport, and LaGuardia Airport; 109 million travelers used these three airports in 2012, and the city's airspace is the busiest in the nation. JFK and Newark Liberty were the busiest and fourth busiest U.S. gateways for international air passengers, respectively, in 2012; as of 2011, JFK was the busiest airport for international passengers in North America. Plans have advanced to expand passenger volume at a fourth airport, Stewart International Airport near Newburgh, New York, by the Port Authority of New York and New Jersey. Plans were announced in July 2015 to entirely rebuild LaGuardia Airport in a multibillion-dollar project to replace its aging facilities.

paragraph_text: The United Kingdom, an island country, is home to many of Europe's largest and busiest airports. London - Heathrow, which handles over 75 million international passengers annually, is the largest airport in the UK. London serves as the largest aviation hub in the world by passenger traffic, with six international airports, handling over 163 million passengers in 2016, more than any other city. London's second - busiest airport, London - Gatwick, was until 2016 the world's busiest single - runway airport. Manchester Airport is the United Kingdom's third - busiest airport. London - Stansted and London - Luton are the fourth - and fifth - busiest airports, respectively.

paragraph_text: Orlando International Airport (IATA: MCO, ICAO: KMCO, FAA LID: MCO) is a major public airport located six miles (10 km) southeast of Downtown Orlando, Florida, United States. In 2017, MCO handled 44,611,265 passengers, making it the busiest airport in the state of Florida and the eleventh - busiest airport in the United States.

paragraph_text: Two airports serve Philadelphia: the Philadelphia International Airport (PHL), straddling the southern boundary of the city, and the Northeast Philadelphia Airport (PNE), a general aviation reliever airport in Northeast Philadelphia. Philadelphia International Airport provides scheduled domestic and international air service, while Northeast Philadelphia Airport serves general and corporate aviation. In 2013, Philadelphia International Airport was the 15th busiest airport in the world measured by traffic movements (i.e. takeoffs and landings). It is also the second largest hub and primary international hub for American Airlines.

Question: What is the second busiest airport in the metro area Roark returns to?
Answer: Newark Liberty International Airport