Information: - Freinberg is a municipality in the district of Scharding in Upper Austria, Austria. The municipality has an area of 20 square kilometers and population of 1494 (on 31 December 2005). - Upper Austria (; Austro-Bavarian: "Obaostarreich") is one of the nine states or "Bundeslander" of Austria. Its capital is Linz. Upper Austria borders on Germany and the Czech Republic, as well as on the other Austrian states of Lower Austria, Styria, and Salzburg. With an area of and 1.437 million inhabitants, Upper Austria is the fourth-largest Austrian state by land area and the third-largest by population. - A radio station is a set of equipment necessary to carry on communication via radio waves. Generally, it is a receiver or transmitter, an antenna, and some smaller additional equipment necessary to operate them. Radio stations play a vital role in communication technology as they are heavily relied on to transfer data and information across the world. - Linz is the third-largest city of Austria and capital of the state of Upper Austria. It is located in the north centre of Austria, approximately south of the Czech border, on both sides of the River Danube. The population of the city is , and that of the Greater Linz conurbation is about 271,000. - The Freinberg Transmitter is a broadcasting transmitter on the Freinberg near Linz . It was established in 1928 as medium wave broadcasting station and used until 1936 a T - antenna , which hung up on two guyed masts , which were 45 metres tall . In 1936 , the T - antenna was replaced by a 165 metre tall mast , insulated against ground . In summer 1950 , the antenna mast was shortened to 120 metres , because it was too long for the new frequency and would have a bad radiation diagram . In October 1957 , the mast was again extended to 146 metres and in 1965 the transmitters were replaced by a new device . At the beginning of the 1980s , medium wave broadcasting ceased at Freinberg . The mast is now used for FM transmission . - Broadcasting is the distribution of audio and/or video content or other messages to a dispersed audience via any electronic mass communications medium, but typically one using the electromagnetic spectrum (radio waves), in a one-to-many model. Broadcasting began with AM radio, which came into popular use around 1920 with the spread of vacuum tube radio transmitters and receivers. Before this, all forms of electronic communication (early radio, telephone, and telegraph) were one-to-one, with the message intended for a single recipient. The term "broadcasting", borrowed from the agricultural method of sowing seeds in a field by casting them broadly about, was coined by either KDKA manager Frank Conrad or RCA historian George Clark around 1920 to distinguish this new activity of "one-to-many" communication; a single radio station transmitting to multiple listeners. Given the information above, choose from the list below the object entity that exhibits the relation 'country' with the subject 'freinberg transmitter'. Choices: - austria - czech republic - world
austria

Question: Information: - A vertical and/or short take-off and landing (V/STOL) aircraft is an airplane able to take-off or land vertically or on short runways. Vertical takeoff and landing (VTOL) aircraft are a subset of V/STOL craft that do not require runways at all. Generally, a V/STOL aircraft needs to be able to hover. Helicopters are not considered under the V/STOL classification as the classification is only used for airplanes, aircraft that achieve lift in forward flight by planing the air, thereby achieving speed and fuel efficiency that is typically greater than helicopters are capable of. - A tiltrotor is an aircraft which generates lift and propulsion by way of one or more powered rotors (sometimes called "proprotors") mounted on rotating engine pods or nacelles usually at the ends of a fixed wing or an engine mounted in the fuselage with drive shafts transferring power to rotor assemblies mounted on the wingtips. It combines the vertical lift capability of a helicopter with the speed and range of a conventional fixed-wing aircraft. For vertical flight, the rotors are angled so the plane of rotation is horizontal, lifting the way a helicopter rotor does. As the aircraft gains speed, the rotors are progressively tilted forward, with the plane of rotation eventually becoming vertical. In this mode the wing provides the lift, and the rotor provides thrust as a propeller. Since the rotors can be configured to be more efficient for propulsion (e.g. with root-tip twist) and it avoids a helicopter's issues of retreating blade stall, the tiltrotor can achieve higher speeds than helicopters. - A helicopter is a type of rotorcraft in which lift and thrust are supplied by rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward, and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft and many forms of VTOL (vertical takeoff and landing) aircraft cannot perform. - A vertical take-off and landing (VTOL) aircraft is one that can hover, take off, and land vertically. This classification includes fixed-wing aircraft as well as helicopters and other aircraft with powered rotors, such as cyclogyros/cyclocopters and tiltrotors. Some VTOL aircraft can operate in other modes as well, such as CTOL (conventional take-off and landing), STOL (short take-off and landing), and/or STOVL (short take-off and vertical landing). Others, such as some helicopters, can only operate by VTOL, due to the aircraft lacking landing gear that can handle horizontal motion. VTOL is a subset of V/STOL (vertical and/or short take-off and landing). - The Bell XV-15 was an American tiltrotor VTOL aircraft. It was the second successful experimental tiltrotor aircraft and the first to demonstrate the concept's high speed performance relative to conventional helicopters. - The Hiller X-18 was an experimental cargo transport aircraft designed to be the first testbed for tiltwing and VSTOL (vertical/short takeoff and landing) technology. - The Bell X- 22 was an American V / STOL X-plane with four tilting ducted fans . Takeoff was to selectively occur either with the propellers tilted vertically upwards , or on a short runway with the nacelles tilted forward at approximately 45 . Additionally , the X- 22 was to provide more insight into the tactical application of vertical takeoff troop transporters such as the preceding Hiller X- 18 and the X- 22 successor , the Bell XV - 15 . Another program requirement was a true airspeed in level flight of at least 525 km / h ( 326 mph ; 283 knots ) . - An airplane or aeroplane (informally plane) is a powered, fixed-wing aircraft that is propelled forward by thrust from a jet engine or propeller. Airplanes come in a variety of sizes, shapes, and wing configurations. The broad spectrum of uses for airplanes includes recreation, transportation of goods and people, military, and research. Commercial aviation is a massive industry involving the flying of tens of thousands of passengers daily on airliners. Most airplanes are flown by a pilot on board the aircraft, but some are designed to be remotely or computer-controlled. Given the information above, choose from the list below the object entity that exhibits the relation 'instance of' with the subject 'bell x-22'. Choices: - aircraft - airplane - bell - classification - commercial aviation - computer - concept - engine - helicopter - military - mode - motion - people - performance - range - rotorcraft - transport - wing
Answer:
airplane