CREATE TABLE table_10064 ("Railway" CLOB, "Builder" CLOB, "Built" CLOB, "Wheels" CLOB, "Location" CLOB, "ObjectNumber" CLOB)

What year was Stephenson the builder?
SELECT "Built" FROM table_10064 WHERE "Builder" = 'stephenson'
SELECT "Built" FROM "table_10064" WHERE "Builder" = 'stephenson'