I want the ICAO for city of xi'an
CREATE TABLE table_name_51 (
    icao VARCHAR,
    city VARCHAR
)
SELECT icao FROM table_name_51 WHERE city = "xi'an"
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: I want the ICAO for city of xi'an ### Input: CREATE TABLE table_name_51 (
    icao VARCHAR,
    city VARCHAR
) ### Response: SELECT icao FROM table_name_51 WHERE city = "xi'an"