Owen Roberts International Airport (IATA: GCM, ICAO: MWCR) is an airport located in Grand Cayman, Cayman Islands.
 It is the main international airport for the Cayman Islands as well as the main base for Cayman Airways.
 The airport is named after British Royal Air Force (RAF) Wing Commander Owen Roberts, a pioneer of commercial aviation in the country, and is one of the two entrance ports to the Cayman Islands.
 Owen Roberts International Airport was the only international airport remaining in the Caribbean to have an open-air observation "waving gallery" until January 2017 when it was closed due to reconstruction.
 The new upgraded Owen Roberts International Airport terminal will no longer have an observation "waving gallery".
Zvartnots International Airport (Armenian: Զվարթնոց միջազգային օդանավակայան , "Zvart'nots' mijazgayin odanavakayan " , ] ) (IATA: EVN, ICAO: UDYZ) is located near Zvartnots, 12 km west of Yerevan, the capital city of Armenia.
 It acts as the main international airport of Armenia and is Yerevan's main international transport hub.
 It is the busiest airport in the nation and the third-busiest of the Caucasus after Heydar Aliyev International Airport in Baku and Tbilisi International Airport in Tbilisi.
Gimpo International Airport (Korean: 김포국제공항 ] ), commonly known as Gimpo Airport (IATA: GMP, ICAO: RKSS) (formerly and originally Kimpo International Airport), is located in the far western end of Seoul, some 15 km west of the Central District of Seoul.
 Gimpo was the main international airport for Seoul and South Korea before being replaced by Incheon International Airport in 2001.
 In 2015, 23,163,778 passengers used the airport, making it the third largest airport in Korea, as it has been surpassed by Jeju International Airport.
Amsterdam Airport Schiphol (Dutch: "Luchthaven Schiphol" , ] ) (IATA: AMS, ICAO: EHAM) is the main international airport of both Holland
All Nippon Airways Co., Ltd. (全日本空輸株式会社 , Zen Nippon Kūyu Kabushiki gaisha ) , also known as Zennikkū (全日空 ) or ANA, is the largest airline in Japan.
 Its headquarters are located at Shiodome City Center in the Shiodome area of Minato, Tokyo, Japan.
 It operates services to both domestic and international destinations and had more than 20,000 employees as of March 2016.
 In May 2010, ANA's total passenger traffic was up year-on-year by 7.8%, and its international services grew by 22% to 2.07 million passengers in the first five months of 2010.
 ANA's main international hubs are at Narita International Airport outside Tokyo and Kansai International Airport outside Osaka.
 Its main domestic hubs are at Tokyo International Airport (Haneda), Osaka International Airport (Itami), Chūbu Centrair International Airport (near Nagoya), and New Chitose Airport (near Sapporo).
Nadi International Airport (IATA: NAN, ICAO: NFFN) is the main international airport for the Republic of Fiji as well as an important regional hub for the South Pacific islands, located by the coast on the western side of the main island Viti Levu.
 It is the main hub of Fiji Airways and its domestic and regional subsidiary Fiji Link.
 The airport is 10 km from the city of Nadi and 20 km from the city of Lautoka.
 In 2014, it handled 1,984,898 passengers on international and domestic flights.
 It handles about 97% of international visitors to Fiji, of which are 85% tourists.
 Despite being Fiji's main airport, it is quite far away, about 192 km northwest of the country's capital Suva and its airport, Nausori International Airport.
The Ninoy Aquino International Airport (Filipino: "Paliparang Pandaigdig ng Ninoy Aquino" ) or NAIA , formerly known and still commonly referred to as Manila International Airport (IATA: MNL, ICAO: RPLL) , is the airport serving Manila and its surrounding metropolitan area.
 Located along the border between the cities of Pasay and Parañaque, about 7 km south of Manila proper and southwest of Makati, NAIA is the main international gateway for travelers to the Philippines and serves as a hub for AirAsia Philippines, Cebgo, Cebu Pacific, PAL Express, and Philippine Airlines.
 It is managed by the Manila International Airport Authority (MIAA), a branch of the Department of Transportation (DOTr).
Tehran Imam Khomeini International Airport (Persian: فرودگاه بین‌المللی امام خمینی‎ ‎ ) (IATA: IKA, ICAO: OIIE) , also known as Tehran-IKIA or IKIA, is the main international airport of Iran, located 30 km southwest of the city of Tehran, near the localities of Robat Karim and Eslamshahr, on a 13500 hectare site.
 Along with Mehrabad International Airport, it is one of the two major commercial airports serving Tehran and the busiest international air passenger gateway to Iran.
 As of December 2016, it serves international destinations in Asia and Europe.
 All domestic flights in Tehran are currently served by Mehrabad Airport.
Nieuw-Vennep is a town in the Dutch province of North Holland.
 It is a part of the municipality of Haarlemmermeer, and lies about 10 km southwest of Amsterdam Airport Schiphol.
 It has about 31,300 inhabitants, half of which live in the newly built district of Getsewoud.
 The built-up area of the town was 3.71 km, and contained 7,513 residences.
 The wider statistical area of Nieuw-Vennep has a population of around 40,000.
 In 2001, Nieuw-Vennep had 17,886 inhabitants, which later doubled due to the development of Getsewoud.
Larnaca International Airport (Greek: Διεθνής Aερολιμένας Λάρνακας "Diethnís Aeroliménas Lárnakas" Turkish: "Larnaka Uluslararası Havaalanı" ) (IATA: LCA, ICAO: LCLK) is an international airport located 4 km southwest of Larnaca, Cyprus.
 Larnaca International Airport is Cyprus' main international gateway and the largest of the country's two commercial airports, the other being Paphos International Airport on the island's southwestern coast.
 In July 2016 Larnaca airport was renamed "Larnaca International Airport - Glafcos Clerides” in honour of former President of the Republic Glafcos Clerides.

Question: The town of Nieuw-Vennep is southwest of what main international airport of Holland?
Answer: Amsterdam Airport Schiphol.