Task: Text Categorization
Input (English): Context: The LEM-3 (a.k.a. LIG-6 (Leningradskii Institoot Grazdahnskovo Vozdooshnovo Flota- Leningrad Institute civil air fleet)) was a transport aircraft designed and built in the USSR from 1936.
Question: The document can be classified to which topic? 
Options: 1)Building, 2)MeanOfTransportation, 3)EducationalInstitution, 4)Album, 5)OfficeHolder
Output (English): 2