What 2011 GDP (PPP) billions of USD does Iraq have?
CREATE TABLE "table1_2248784_4" (
  "rank_mid_east" real,
  "rank_asia" real,
  "rank_world" real,
  "country" text,
  "2011_gdp_ppp_billions_of_usd" text
);
SELECT "2011_gdp_ppp_billions_of_usd" FROM "table1_2248784_4" WHERE "country"='Iraq';