[['name of system', 'location', 'traction type', 'date (from)', 'date (to)'], ['calgary municipal railway', 'calgary', 'electric', '5 jul 1909 25 may 1981', '29 dec 1950 -'], ['edmonton radial railway', 'edmonton', 'electric', '30 oct 1908 22 apr 1978', '1 sep 1951 -'], ['edmonton radial railway', 'edmonton', 'petrol (gasoline)', '30 sep 1913', '1 apr 1914'], ['lake louise tramway', 'lake louise', 'petrol (gasoline)', '1912', '1930'], ['lethbridge municipal railway', 'lethbridge', 'electric', 'sep 1912', '8 sep 1947']]
the Electric Edmonton Radial Railway is the oldest of the 5 Railway
the [ENT] [ENT] is the oldest of the 5 [ENT]