Please answer the following question: Information: - ATR ( Aerei da Trasporto Regionale or Avions de transport regional ; Regional Air Transport in English ) is a French - Italian aircraft manufacturer headquartered on the grounds of Toulouse Blagnac International Airport in Blagnac , France . It was formed in 1981 by Aerospatiale of France ( now Airbus Group ) and Aeritalia ( now Alenia Aermacchi ) of Italy . Its primary products are the ATR 42 and ATR 72 aircraft . - The ATR 72 is a twin-engine turboprop short-haul regional airliner manufactured by the French-Italian aircraft manufacturer ATR. It was developed as a stretched variant of the ATR 42, and entered service in 1989. It has been typically employed as a regional airliner, although other roles have been performed by the type such as corporate transport, cargo aircraft and maritime patrol aircraft. Successive models of the ATR 72 have been introduced; a single aircraft can seat up to 78 passengers in a single-class configuration. - Airbus Helicopters (formerly Eurocopter Group) is the helicopter manufacturing division of Airbus Group. It is the largest in the industry in terms of revenues and turbine helicopter deliveries. Its head office is located at Marseille Provence Airport in Marignane, France, near Marseille. The main facilities of Airbus Helicopters are at its headquarters in Marignane, France and in Donauworth, Germany, with additional production plants in Brazil (Itajuba,MG), Australia, Spain and the United States. The company was renamed Airbus Helicopters on 2 January 2014. - Airbus Group SE is a European multinational aerospace and defence corporation. Headquartered in Leiden, Netherlands, the group consists of the three business divisions Airbus, Airbus Defence and Space, and Airbus Helicopters. The company was originally formed as the European Aeronautic Defence and Space Company NV (EADS) on 10 July 2000 by the merger of Aerospatiale-Matra, DaimlerChrysler Aerospace AG (DASA), and Construcciones Aeronauticas SA (CASA). In January 2014, EADS was reorganised as Airbus Group NV, combining the divisions for development and marketing of civil and military aircraft, as well as communications systems, missiles, space rockets, helicopters, satellites, and related systems. On 27 May 2015 the company became the ninth component of Euro Stoxx 50 stock market index to adopt the corporate form of the European Union (EU), becoming a "societas Europaea" (SE; Latin: European company). - The Netherlands is the main constituent country of the Kingdom of the Netherlands. It is a densely populated country located in Western Europe with three island territories in the Caribbean. The European part of the Netherlands borders Germany to the east, Belgium to the south, and the North Sea to the northwest, sharing maritime borders with Belgium, the United Kingdom, and Germany. The largest cities in the Netherlands are Amsterdam, Rotterdam, The Hague and Utrecht. Amsterdam is the country's capital, while The Hague holds the Dutch seat of government and parliament. The name "Holland" is used to refer informally to the whole of the country of the Netherlands. - Mecanique Aviation Traction or Matra ("Mecanique Aviation TRAction") was a French company covering a wide range of activities mainly related to automobiles, bicycles, aeronautics and weaponry. In 1994, it became a subsidiary of the Lagardere Group and now operates under that name. - The EURO STOXX 50 is a stock index of Eurozone stocks designed by STOXX, an index provider owned by Deutsche Borse Group. According to STOXX, its goal is "to provide a blue-chip representation of Supersector leaders in the Eurozone". It is made up of fifty of the largest and most liquid stocks. The index futures and options on the EURO STOXX 50, traded on Eurex, are among the most liquid such products in Europe and the world. - Aeritalia was an aerospace engineering corporation based in Italy, formed by the merger of Fiat Aviazione and Aerfer in 1969. Alenia Aeronautica was created in 1990 by concentrating the Finmeccanica aerospace and defense industries Aeritalia and Selenia. In 1990, Aeritalia and Selenia were merged by parent company Finmeccanica as Alenia Aeronautica. - The ATR 42 is a twin-turboprop, short-haul regional airliner built in France and Italy by ATR (Aerei da Trasporto Regionale or Avions de transport regional). ATR models have their final assembly in Toulouse, and share resources and technology with Airbus. The name "42" comes from the aircraft's standard seating, which varies from 40 to 52. The aircraft serves as the basis for the larger ATR 72. - A stock index or stock market index is a measurement of the value of a section of the stock market. It is computed from the prices of selected stocks (typically a weighted average). It is a tool used by investors and financial managers to describe the market, and to compare the return on specific investments. - Leiden (in English and archaic Dutch also Leyden) is a city and municipality in the Dutch province of South Holland. The municipality of Leiden has a population of 122,915, but the city forms one densely connected agglomeration with its suburbs Oegstgeest, Leiderdorp, Voorschoten and Zoeterwoude with 206,647 inhabitants. The Netherlands Central Bureau of Statistics (CBS) further includes Katwijk in the agglomeration which makes the total population of the Leiden urban agglomeration 270,879, and in the larger Leiden urban area also Teylingen, Noordwijk, and Noordwijkerhout are included with in total 348,868 inhabitants. Leiden is located on the Oude Rijn, at a distance of some from The Hague to its south and some from Amsterdam to its north. The recreational area of the Kaag Lakes (Kagerplassen) lies just to the northeast of Leiden. - The European Union (EU) is a political and economic union of member states that are located primarily in Europe. It has an area of , and an estimated population of over 510 million. The EU has developed an internal single market through a standardised system of laws that apply in all member states. EU policies aim to ensure the free movement of people, goods, services, and capital within the internal market, enact legislation in justice and home affairs, and maintain common policies on trade, agriculture, fisheries, and regional development. Within the Schengen Area, passport controls have been abolished. A monetary union was established in 1999 and came into full force in 2002, and is composed of 19 EU member states which use the euro currency. Given the paragraphs above, decide what entity has the relation 'parent company' with 'airbus group se'.
A:
atr