What was the notes of the 400 m event before 2004 with a position of 12th (h)?
CREATE TABLE "competition_record" (
  "year" real,
  "competition" text,
  "venue" text,
  "position" text,
  "event" text,
  "notes" text
);
SELECT "notes" FROM "competition_record" WHERE "event"='400 m' AND "year"<2004 AND "position"='12th (h)';