Task: Text Categorization
Input (English): Context: The Maple Leaf Trainer II was a Canadian biplane trainer designed by Elsie MacGill in 1938 and manufactured by the Canadian Car and Foundry. Although it was intended for use as a basic trainer for the Royal Canadian Air Force it was rejected and the only two completed airframes were sold to Mexico.
Question: The document can be classified to which topic? 
Options: 1)Athlete, 2)OfficeHolder, 3)MeanOfTransportation, 4)Company, 5)EducationalInstitution
Output (English): 3