Task: Text Categorization
Input (English): Context: The Boeing X-50A Dragonfly formerly known as the Canard Rotor/Wing Demonstrator was a gyrodyne unmanned aerial vehicle that was developed by Boeing and DARPA to demonstrate the principle that a helicopter's rotor could be stopped in flight and act as a fixed wing. The X-50A built upon the work of the Sikorsky S-72 X-Wing program of the 1980s by designing the vehicle as a multi-mode aircraft from the ground up.
Question: The document can be classified to which topic? 
Options: 1)EducationalInstitution, 2)Building, 3)Film, 4)MeanOfTransportation, 5)Animal
Output (English): 4