What is the ICAO of Douala city?
CREATE TABLE table_name_13 (icao VARCHAR, city VARCHAR)
SELECT icao FROM table_name_13 WHERE city = "douala"
### Context: CREATE TABLE table_name_13 (icao VARCHAR, city VARCHAR) ### Question: What is the ICAO of Douala city? ### Answer: SELECT icao FROM table_name_13 WHERE city = "douala"