[['class', 'number (s)', 'quantity', 'year (s) of manufacture', 'type'], ['d i', 'names', '15', '1871 - 1875', 'b n2t'], ['d ii (old)', 'names', '4', '1873', 'b n2t'], ['d ii', '2400 - 2472', '73', '1898 - 1904', 'c n2t'], ['d iii', 'names', '6', '1873', 'b n2t'], ['d iv', 'names , 1701 - 1737', '132', '1875 - 1897', 'b n2t'], ['d v', 'names', '10', '1877 - 1878', 'c n2t'], ['d ix', 'names , 1931 - 1960 , 2101 - 2115', '55', '1888 - 1899', '1b n2t'], ['d xii', '2201 - 2296', '96', '1897 - 1904', '1′b2′ n2t'], ['pt 2 / 3', '6001 - 6097', '97', '1909 - 1916', '1b h2t'], ['pt 2 / 4 n', '6501 - 6502', '2', '1909', '2′b n2t'], ['pt 2 / 4 h', '5001 - 5012', '12', '1906 - 1909', '1′b1′ h2t'], ['pt 2 / 5 n', '5202 - 5210', '9', '1907', '1′b2′ n2t'], ['pt 2 / 5 h', '5201', '1', '1906', '1′b2′ h2t'], ['pt 3 / 6', '6101 - 6110', '10', '1923', '1′c2′ h2t'], ['gt 2x4 / 4', '5751 - 5765', '15', '1913 - 1914', 'd′d h4vt'], ['gt 2x4 / 4', '5766 - 5775', '10', '1922 - 1923', 'd′d h4vt'], ['r 3 / 3', '2473 - 2490', '18', '1906 - 1913', 'c n2t'], ['r 3 / 3', '4701 - 4790', '90', '1921 - 1922', 'c n2t'], ['r 4 / 4', '4151 - 4183', '33', '1918 - 1919', 'd n2t'], ['r 4 / 4', '4184 - 4192', '9', '1924 - 1925', 'd n2t']]
the highest Quantity has a Year range that is earlier than the Class Pt 2 / 4 H
the highest [ENT] has a [ENT] range that is earlier than the [ENT] [ENT]