Question: What is Busan's rank?
SQL: SELECT SUM("Rank") FROM "2-16478687-4" WHERE "City" = 'Busan';

Question: Which rank had a population of 7069000?
SQL: SELECT COUNT("Rank") FROM "2-16478687-4" WHERE "Population" = 7069000.0;

Question: What is the total population for the 3616km area?
SQL: SELECT COUNT("Population") FROM "2-16478687-4" WHERE "Area (km²)" = 3616.0;