Tell me the average of capacity of cinemas open for each year in a line chart, and sort in desc by the X-axis.
CREATE TABLE film (
    Film_ID int,
    Rank_in_series int,
    Number_in_season int,
    Title text,
    Directed_by text,
    Original_air_date text,
    Production_code text
)

CREATE TABLE cinema (
    Cinema_ID int,
    Name text,
    Openning_year int,
    Capacity int,
    Location text
)

CREATE TABLE schedule (
    Cinema_ID int,
    Film_ID int,
    Date text,
    Show_times_per_day int,
    Price float
)
SELECT Openning_year, AVG(Capacity) FROM cinema ORDER BY Openning_year 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: Tell me the average of capacity of cinemas open for each year in a line chart, and sort in desc by the X-axis. ### Input: CREATE TABLE film (
    Film_ID int,
    Rank_in_series int,
    Number_in_season int,
    Title text,
    Directed_by text,
    Original_air_date text,
    Production_code text
)

CREATE TABLE cinema (
    Cinema_ID int,
    Name text,
    Openning_year int,
    Capacity int,
    Location text
)

CREATE TABLE schedule (
    Cinema_ID int,
    Film_ID int,
    Date text,
    Show_times_per_day int,
    Price float
) ### Response: SELECT Openning_year, AVG(Capacity) FROM cinema ORDER BY Openning_year DESC