What single(s) released in 2008 and had 4000 copies?
CREATE TABLE "singles" (
  "date" real,
  "single" text,
  "backed_with" text,
  "record_label" text,
  "format" text,
  "other_details" text
);
SELECT "single" FROM "singles" WHERE "date"=2008 AND "other_details"='4000 copies';