For those ships that do not have a captain, tell me the total number of their classes using a pie chart, show in desc by the bar.
CREATE TABLE captain (
    Captain_ID int,
    Name text,
    Ship_ID int,
    age text,
    Class text,
    Rank text
)

CREATE TABLE Ship (
    Ship_ID int,
    Name text,
    Type text,
    Built_Year real,
    Class text,
    Flag text
)
SELECT Class, COUNT(Class) FROM Ship WHERE NOT Ship_ID IN (SELECT Ship_ID FROM captain) GROUP BY Class ORDER BY Class DESC
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: For those ships that do not have a captain, tell me the total number of their classes using a pie chart, show in desc by the bar. ### Input: CREATE TABLE captain (
    Captain_ID int,
    Name text,
    Ship_ID int,
    age text,
    Class text,
    Rank text
)

CREATE TABLE Ship (
    Ship_ID int,
    Name text,
    Type text,
    Built_Year real,
    Class text,
    Flag text
) ### Response: SELECT Class, COUNT(Class) FROM Ship WHERE NOT Ship_ID IN (SELECT Ship_ID FROM captain) GROUP BY Class ORDER BY Class DESC