What is the ISO for South Sudan?
CREATE TABLE "officially_assigned_code_elements" (
  "english_short_name_upper_lower_case" text,
  "alpha_2_code" text,
  "alpha_3_code" text,
  "numeric_code" real,
  "iso_3166_2_codes" text
);
SELECT "iso_3166_2_codes" FROM "officially_assigned_code_elements" WHERE "english_short_name_upper_lower_case"='South Sudan';