Table: province_data_2
Columns: rank
common_of
population
area_km_2
density_inhabitants_km_2
altitude_mslm

Question: What rank is the common with an area of 47.3 km^2?
SQL: SELECT "rank" FROM province_data_2 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 province_data_2 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 province_data_2 WHERE "area_km_2" = '130.7'

Question: How may population figures are given for Settimo Torinese
SQL: SELECT COUNT("population") FROM province_data_2 WHERE "common_of" = 'Settimo Torinese'

Question: What is the name of the 9th ranked common?
SQL: SELECT "common_of" FROM province_data_2 WHERE "rank" = '9th'

Question: The common of Chieri has what population density?
SQL: SELECT "density_inhabitants_km_2" FROM province_data_2 WHERE "common_of" = 'Chieri'