CREATE TABLE "see_also" (
  "rank" text,
  "common_of" text,
  "population" real,
  "area_km_2" text,
  "density_inhabitants_km_2" text,
  "altitude_mslm" real
);

Question: What rank is the common with an area of 47.3 km^2?
SQL: SELECT "rank" FROM "see_also" WHERE "area_km_2"='47.3';

Question: What is the density of the common with an area of 20.4 km^2?
SQL: SELECT "density_inhabitants_km_2" FROM "see_also" WHERE "area_km_2"='20.4';

Question: How many altitudes does the common with an area of 130.7 km^2 have?
SQL: SELECT COUNT("altitude_mslm") FROM "see_also" WHERE "area_km_2"='130.7';

Question: How may population figures are given for Settimo Torinese
SQL: SELECT COUNT("population") FROM "see_also" WHERE "common_of"='Settimo Torinese';

Question: What is the name of the 9th ranked common?
SQL: SELECT "common_of" FROM "see_also" WHERE "rank"='9th';

Question: The common of Chieri has what population density?
SQL: SELECT "density_inhabitants_km_2" FROM "see_also" WHERE "common_of"='Chieri';