The Midland Railway 2501 and 2511 Class were two classes of American-built 2-6-0 steam locomotives. The Midland's own Derby Works had reached their capacity and were unable to produce additional engines at the time and many British locomotive builders were recovering from an 1897-1898 strike over the eight-hour working day and thus had large backlogs of unfulfilled orders so the Midland Railway turned to American builders. 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?
Mean Of Transportation

The Ponnaiyar is a river in southern India. It rises on the hill of Nandidurg in Chikkaballapur District of Karnataka state and flows south and then east for 400 km (250 mi) through Karnataka and Tamil Nadu emptying into the Bay of Bengal at Cuddalore.Tirukkovilur is the largest city in the path of Ponnaiyar River.The South Pennar River is known as Dakshina Pinakini in Kannada and Thenpennai in Tamil. 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?
Natural Place

Colin Sampson Benham (born in Collingwood on 23 November 1907 died in Geelong on 22 February 2000) was an Australian rules footballer who played for Fitzroy Football Club in the Victorian Football League (VFL). 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?
