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

Show me a bar chart for what are the nationalities and total ages of journalists?, I want to rank by the bar in descending.
SELECT Nationality, SUM(Age) FROM journalist GROUP BY Nationality ORDER BY Nationality DESC
SELECT "Nationality", SUM("Age") FROM "journalist" GROUP BY "Nationality" ORDER BY "Nationality" DESC