CREATE TABLE "parishes" (
  "official_name" text,
  "status" text,
  "area_km_2" text,
  "population" real,
  "census_ranking" text
);

Question: What is the census ranking for the Perth parish?
SQL: SELECT "census_ranking" FROM "parishes" WHERE "official_name"='Perth';

Question: What is the minimum population of the parish with a 750.51 km area?
SQL: SELECT MIN("population") FROM "parishes" WHERE "area_km_2"='750.51';

Question: What is the census ranking of the Perth parish?
SQL: SELECT "census_ranking" FROM "parishes" WHERE "official_name"='Perth';