Task: Text Categorization
Input (English): Context: The Airspeed A.S.39 Fleet Shadower was a British long-range patrol aircraft design that did not go beyond the prototype stage. While the concept of a fleet shadower had some promise the resulting prototypes were soon overtaken by wartime developments in airborne radar.
Question: The document can be classified to which topic? 
Options: 1)MeanOfTransportation, 2)Animal, 3)EducationalInstitution, 4)Athlete
Output (English): 1