Task: Text Categorization
Input (English): Context: The XN5N was a prototype United States monoplane trainer aircraft produced by the Naval Aircraft Factory in Philadelphia Pennsylvania in 1941. A single prototype was built and evaluated.The type was not placed in production.
Question: The document can be classified to which topic? 
Options: 1)NaturalPlace, 2)Company, 3)Film, 4)MeanOfTransportation, 5)Athlete
Output (English): 4