CREATE TABLE "administrative_divisions" (
  "nr" real,
  "district" text,
  "former_name" text,
  "area_ha" real,
  "population_2005" real,
  "no_of_villages" real,
  "density_persons_ha" text
);

Question: If there are 18 villages, what is the minimum area ?
SQL: SELECT MIN("area_ha") FROM "administrative_divisions" WHERE "no_of_villages"=18;

Question: With the population in 2005 of 572, what is the former name?
SQL: SELECT "former_name" FROM "administrative_divisions" WHERE "population_2005"=572;

Question: How many villages have a density persons/ha of 5.5?
SQL: SELECT COUNT("no_of_villages") FROM "administrative_divisions" WHERE "density_persons_ha"='5.5';