CREATE TABLE table_40824 ("AIRLINE" TEXT, "ICAO" TEXT, "IATA" TEXT, "CALLSIGN" TEXT, "COMMENCED OPERATIONS" TEXT)

What is the ICAO for Asiana Airlines?
SELECT "ICAO" FROM table_40824 WHERE "AIRLINE" = 'asiana airlines'
SELECT "ICAO" FROM "table_40824" WHERE "AIRLINE" = 'asiana airlines'