CREATE TABLE Ship (Ship_ID NUMBER, Name CLOB, Type CLOB, Built_Year FLOAT, Class CLOB, Flag CLOB)
CREATE TABLE captain (Captain_ID NUMBER, Name CLOB, Ship_ID NUMBER, age CLOB, Class CLOB, Rank CLOB)

Tell me the relationship between average and minimum age of captains in each class. Give a scatter plot.
SELECT AVG(age), MIN(age) FROM captain GROUP BY Class
SELECT AVG("age"), MIN("age") FROM "captain" GROUP BY "Class"