Given the question: The Metropolitan Railway C class was a group of four 0-4-4T steam tank locomotives built in 1891 by Neilson and Company. They were to a design by James Stirling originally the Q class of the South Eastern Railway and were fitted with condensing apparatus for working in tunnels. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
The answer is:
Mean Of Transportation