CREATE TABLE church (Church_ID INT, Name TEXT, Organized_by TEXT, Open_Date INT, Continuation_of TEXT)
CREATE TABLE wedding (Church_ID INT, Male_ID INT, Female_ID INT, Year INT)
CREATE TABLE people (People_ID INT, Name TEXT, Country TEXT, Is_Male TEXT, Age INT)

Show the number of countries for all people whose age is smaller than the average, order from low to high by the total number.
SELECT Country, COUNT(Country) FROM people WHERE Age < (SELECT AVG(Age) FROM people) GROUP BY Country ORDER BY COUNT(Country)
SELECT "Country", COUNT("Country") FROM "people" WHERE "Age" < (SELECT AVG("Age") FROM "people") GROUP BY "Country" ORDER BY COUNT("Country") NULLS FIRST