Task: Text Categorization
Input (English): Context: The GER Class M15 was a class of 160 2-4-2T steam locomotives designed by Thomas William Worsdell and built for the Great Eastern Railway between 1884 and 1909. The original (F4) class of locomotives were fitted with Joy valve gear which was notoriously difficult to 'set'. This earned them the nickname of 'Gobblers' thanks to their high coal consumption rates. As a result between 1911 and 1920 30 of them were rebuilt by James Holden with Stephenson valve gear and higher pressure boilers.
Question: The document can be classified to which topic? 
Options: 1)EducationalInstitution, 2)MeanOfTransportation, 3)Animal, 4)Company, 5)Artist
Output (English): 2