CREATE TABLE table_35862 ("Gauge" CLOB, "Railway" CLOB, "Works no." CLOB, "Year" CLOB, "Builder" CLOB)

In what Year is the Gauge 2 ft 6 in?
SELECT "Year" FROM table_35862 WHERE "Gauge" = '2 ft 6 in'
SELECT "Year" FROM "table_35862" WHERE "Gauge" = '2 ft 6 in'