CREATE TABLE news_report (journalist_ID INT, Event_ID INT, Work_Type TEXT)
CREATE TABLE journalist (journalist_ID INT, Name TEXT, Nationality TEXT, Age TEXT, Years_working INT)
CREATE TABLE event (Event_ID INT, Date TEXT, Venue TEXT, Name TEXT, Event_Attendance INT)

Visualize a bar chart for what are the nationalities and their average ages of journalists?, show in asc by the total number please.
SELECT Nationality, AVG(Age) FROM journalist GROUP BY Nationality ORDER BY AVG(Age)
SELECT "Nationality", AVG("Age") FROM "journalist" GROUP BY "Nationality" ORDER BY AVG("Age") NULLS FIRST