What is the ICAO with commenced operations before 1989?
CREATE TABLE table_42235 (
    "AIRLINE" text,
    "AIRLINE (in Arabic)" text,
    "ICAO" text,
    "CALLSIGN" text,
    "COMMENCED OPERATIONS" real
)
SELECT "ICAO" FROM table_42235 WHERE "COMMENCED OPERATIONS" < '1989'
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 with commenced operations before 1989? ### Input: CREATE TABLE table_42235 (
    "AIRLINE" text,
    "AIRLINE (in Arabic)" text,
    "ICAO" text,
    "CALLSIGN" text,
    "COMMENCED OPERATIONS" real
) ### Response: SELECT "ICAO" FROM table_42235 WHERE "COMMENCED OPERATIONS" < '1989'