How big (in km2) is Persarmenia?
CREATE TABLE "see_also" (
  "province_ashkharh" text,
  "armenian_name" text,
  "area_km" real,
  "number_of_cantons_gavars" real,
  "center" text
);
SELECT "area_km" FROM "see_also" WHERE "province_ashkharh"='Persarmenia';