Can you tell me the Out of that has the Source of united nations, and the Rank larger than 47, and the Year smaller than 2003?
CREATE TABLE "rankings" (
  "name" text,
  "rank" real,
  "out_of" text,
  "source" text,
  "year" real
);
SELECT "out_of" FROM "rankings" WHERE "source"='united nations' AND "rank">47 AND "year"<2003;