Question: How many prefectures have an area of 361.719 kilometers squared?
SQL: SELECT COUNT("Prefecture") FROM "1-221398-1" WHERE "Area (km²)" = '361.719';

Question: What prefecture is listed in the map as number 39?
SQL: SELECT "Prefecture" FROM "1-221398-1" WHERE "Number in map" = '39';

Question: How many prefectures have a population density of 16 people/kilometers squared?
SQL: SELECT COUNT("Pop. density (/km²)") FROM "1-221398-1" WHERE "Number in map" = '16';