what will be the population of Europe when  Northern America is 482 (4.7%)?
CREATE TABLE "un_2012_estimates_and_medium_variant_pro" (
  "year" real,
  "world" real,
  "asia" text,
  "africa" text,
  "europe" text,
  "latin_america_caribbean" text,
  "northern_america" text,
  "oceania" text
);
SELECT "europe" FROM "un_2012_estimates_and_medium_variant_pro" WHERE "northern_america"='482 (4.7%)';