What is the number for year built of W27 that was withdrawn in 1967 with a To LoW year earlier than 1926?
CREATE TABLE "references" (
  "br_sr_no" text,
  "sr_name" text,
  "lswr_no" real,
  "builder" text,
  "built" real,
  "to_io_w" real,
  "withdrawn" real
);
SELECT COUNT("built") FROM "references" WHERE "withdrawn"=1967 AND "br_sr_no"='w27' AND "to_io_w"<1926;