What 1958 CIE is class s?
CREATE TABLE "great_northern_railway" (
  "class" text,
  "type" text,
  "fleet_numbers" text,
  "quantity_made" real,
  "date_made" text,
  "1958_ci" text,
  "1958_uta" text,
  "date_withdrawn" text
);
SELECT "1958_ci" FROM "great_northern_railway" WHERE "class"='s';