I want the NGC number for leo of irregular galaxy
CREATE TABLE table_name_16 (
    ngc_number VARCHAR,
    constellation VARCHAR,
    object_type VARCHAR
)
SELECT ngc_number FROM table_name_16 WHERE constellation = "leo" AND object_type = "irregular galaxy"
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 NGC number for leo of irregular galaxy ### Input: CREATE TABLE table_name_16 (
    ngc_number VARCHAR,
    constellation VARCHAR,
    object_type VARCHAR
) ### Response: SELECT ngc_number FROM table_name_16 WHERE constellation = "leo" AND object_type = "irregular galaxy"