What are the nationalities and their average ages of journalists. Show me a bar chart.
CREATE TABLE event (
    Event_ID int,
    Date text,
    Venue text,
    Name text,
    Event_Attendance int
)

CREATE TABLE journalist (
    journalist_ID int,
    Name text,
    Nationality text,
    Age text,
    Years_working int
)

CREATE TABLE news_report (
    journalist_ID int,
    Event_ID int,
    Work_Type text
)
SELECT Nationality, AVG(Age) FROM journalist GROUP BY Nationality
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 are the nationalities and their average ages of journalists. Show me a bar chart. ### Input: CREATE TABLE event (
    Event_ID int,
    Date text,
    Venue text,
    Name text,
    Event_Attendance int
)

CREATE TABLE journalist (
    journalist_ID int,
    Name text,
    Nationality text,
    Age text,
    Years_working int
)

CREATE TABLE news_report (
    journalist_ID int,
    Event_ID int,
    Work_Type text
) ### Response: SELECT Nationality, AVG(Age) FROM journalist GROUP BY Nationality