Which airport has an IATA Code of ORD?
CREATE TABLE "table1_18047346_5" (
  "rank" real,
  "airport_name" text,
  "location" text,
  "iata_code" text,
  "tonnes" text,
  "pct_chg_2010_11" text
);
SELECT "airport_name" FROM "table1_18047346_5" WHERE "iata_code"='ORD';