Which number and name has the description Gresley RB and a date before 1937?
CREATE TABLE "list_of_great_central_railway_locomotive" (
  "number_name" text,
  "description" text,
  "livery" text,
  "owner_s" text,
  "date" real
);
SELECT "number_name" FROM "list_of_great_central_railway_locomotive" WHERE "description"='gresley rb' AND "date"<1937;