What district is St Martin's Without parish in with a population less than 75?
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 "population"<75 AND "name"='st martin''s without';