What is the ICAO for Riyadh, Saudi Arabia?
CREATE TABLE table_41621 (
    "City" text,
    "Country" text,
    "IATA" text,
    "ICAO" text,
    "Airport" text
)
SELECT "ICAO" FROM table_41621 WHERE "Country" = 'saudi arabia' AND "City" = 'riyadh'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the ICAO for Riyadh, Saudi Arabia? ### Input: CREATE TABLE table_41621 (
    "City" text,
    "Country" text,
    "IATA" text,
    "ICAO" text,
    "Airport" text
) ### Response: SELECT "ICAO" FROM table_41621 WHERE "Country" = 'saudi arabia' AND "City" = 'riyadh'