Task: Text Categorization
Input (English): Context: The EMD DD35A was a 5000 hp (3730 kW) diesel-electric locomotive of D-D wheel arrangement built by General Motors Electro-Motive Division exclusively for the Union Pacific Railroad. They were a cab-equipped variant of the previous cabless booster (B unit) EMD DD35 (sometimes erroneously called the 'DD35B'). Fifteen DD35A locomotives were built between May and July 1965; they were assigned road numbers 70 through 84.
Question: The document can be classified to which topic? 
Options: 1)OfficeHolder, 2)MeanOfTransportation, 3)NaturalPlace, 4)Animal
Output (English): 2