Table: province_alessandria_stats
Columns: rank
city
population
area_km_2
density_inhabitants_km_2
altitude_mslm

Question: What is the average area of the city that has a density less than than 206.2 and an altitude of less than 85?
SQL: SELECT AVG("area_km_2") FROM province_alessandria_stats WHERE "density_inhabitants_km_2" < 206.2 AND "altitude_mslm" < 85

Question: What is the lowest density of alessandria where the area is bigger than 16.02 and altitude is less than 116?
SQL: SELECT MIN("density_inhabitants_km_2") FROM province_alessandria_stats WHERE "area_km_2" > 16.02 AND "altitude_mslm" < 116 AND "city" = 'alessandria'

Question: What is the lowest density of serravalle scrivia?
SQL: SELECT MIN("density_inhabitants_km_2") FROM province_alessandria_stats WHERE "city" = 'serravalle scrivia'

Question: What is the lowest population of alessandria where the altitude is less than 197 and density is less than 461.8?
SQL: SELECT MIN("population") FROM province_alessandria_stats WHERE "altitude_mslm" < 197 AND "city" = 'alessandria' AND "density_inhabitants_km_2" < 461.8