What is the number & name with an Undergoing overhaul, restoration or repairs date?
CREATE TABLE "list_of_great_central_railway_locomotive" (
  "number_name" text,
  "description" text,
  "livery" text,
  "owner_s" text,
  "date" text
);
SELECT "number_name" FROM "list_of_great_central_railway_locomotive" WHERE "date"='undergoing overhaul, restoration or repairs';