What district is the parish Milburn in?
CREATE TABLE "list_of_civil_parishes_and_unparished_ar" (
  "name" text,
  "status" text,
  "population" real,
  "district" text,
  "former_local_authority" text
);
SELECT "district" FROM "list_of_civil_parishes_and_unparished_ar" WHERE "name"='milburn';