Answer the following question: Information:  - East Attica is one of the regional units of Greece. It is part of the region of Attica. The capital of the regional unit is the town of Pallini. The regional unit covers the eastern part of the agglomeration of Athens, and also the rural area to its east.  - Aegean Airlines S.A. ("Aeroporía Aigíou Anónime Etairía" ) is the largest Greek airline by total number of passengers carried, by number of destinations served and by fleet size. A Star Alliance member since June 2010, it operates scheduled and charter services from Athens and Thessaloniki to other major Greek destinations as well as to a number of European and Middle Eastern destinations. Its main hubs are Athens International Airport in Athens, Thessaloniki International Airport in Thessaloniki and Larnaca International Airport in Cyprus. It also uses other Greek airports as bases, some of which are seasonal. It has its head office in Kifisia, a suburb of Athens. Although the airline is the largest airline in Greece, it is not a flag carrier.  - Kropia is a municipality in East Attica, Greece. It is located 16 km southeast of Athens at the fringes of the Athens metropolitan area, and has a land area of 102.0 km. Its population was 30,307 at the 2011 census. The seat of the municipality is in the town of Koropi (pop. 19,164). In descending order of population, its other villages are Kítsi (pop. 4,788), Agía Marína (3,765), Karellás (1,579), and Ágios Dimítrios (1,011).  - An airline is a company that provides air transport services for traveling passengers and freight. Airlines utilize aircraft to supply these services and may form partnerships or alliances with other airlines for codeshare agreements. Generally, airline companies are recognized with an air operating certificate or license issued by a governmental aviation body.  - A passenger (also abbreviated as pax) is a person who travels in a vehicle but bears little or no responsibility for the tasks required for that vehicle to arrive at its destination or otherwise operate the vehicle.  - A codeshare agreement, sometimes simply codeshare, is an aviation business arrangement where two or more airlines share the same flight. Sharing, in this sense, means that each airline publishes and markets the flight under its own airline designator and flight number as part of its published timetable or schedule. A seat can be purchased on each airline's designator and flight number, but is operated by only one of these cooperating airlines, commonly called the operating carrier or more precisely (and in line with definitions in IATA Standard Schedules Information Manual): "Administrating carrier". The term "code" refers to the identifier used in flight schedule, generally the two-character IATA airline designator code and flight number. Thus, XX123 (flight number 123 operated by the airline XX), might also be sold by airline YY as YY456 and by ZZ as ZZ9876. Airlines YY and ZZ are in this case called "Marketing airlines" (sometimes abbreviated MKT CXR for "marketing carrier"). Most of the major airlines today have code sharing partnerships with other airlines, and code sharing is a key feature of the major airline alliances. Typically, code-sharing agreements are also a part of the commercial agreements between airlines in the same airline alliances.  - Olympic Airlines ("Olympiakés Aerogrammés"  OA), formerly named Olympic Airways for at least four decades, was the flag carrier airline of Greece with their head office in Athens. They operated services to 37 domestic destinations and to 32 destinations world-wide. Their main base was at Athens International Airport, with hubs at Thessaloniki International Airport, "Macedonia", Heraklion International Airport, "Nikos Kazantzakis" and Rhodes International Airport, "Diagoras". Olympic Airlines also owned a base at London Heathrow International Airport. By December 2007, the airline employed about 8,500 staff.  - Athens International Airport "Eleftherios Venizelos" ("Diethnís Aeroliménas Athinón "Elefthérios Venizélos"") , commonly initialized as "AIA", began operation on 28 March 2001 and is the primary international airport that serves the city of Athens and the region of Attica. It is Greece's busiest airport and it serves as the hub and main base of Aegean Airlines as well as other Greek airlines. The airport is currently in Group 2 of Airports Council International (10-25 million) and as of 2016, Athens International is the 28th busiest airport in Europe.  - Koropi is a town in East Attica, Greece. It is the seat of the municipality Kropia. It is home of the new training facilities of Panathinaikos football club since the summer of 2013.  - Olympic Air S.A. is a regional airline, a subsidiary of the Greek airline carrier Aegean Airlines. It was initially formed from the privatization of the former Greek national carrier Olympic Airlines, a company that carried the name Olympic Airways from 1957 to the beginning of the 21st century. Olympic Air commenced limited operations on 29 September 2009, after Olympic Airlines ceased all operations, with the official full-scale opening of the company taking place two days later on 1 October 2009. Its main hub is Athens International Airport, with Rhodes International Airport serving as secondary hub. The airline's headquarters are in Building 57 at Athens International Airport in Spata, and its registered seat is in Koropi, Kropia, East Attica.  - An aircraft is a machine that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines.  - As of 7 November 2015 , Greek regional airline Olympic Air serves the following 27 destinations :  - Spata, is a town east of Athens, Greece. Since the 2011 local government reform it is part of the municipality Spata-Artemida, of which it is the seat and a municipal unit. The municipal unit (officially named "Spata-Loutsa") has an area of 55.042 km.    What object entity has the relation of 'is a list of' with the subject 'olympic air destinations'?   Choices: - aircraft  - airline  - airport  - capital  - case  - century  - flag  - line  - metropolitan area  - municipality  - person  - star  - term  - town
Answer:
airport