CREATE TABLE table_name_37 (population NUMBER, density__inhabitants_km_2__ VARCHAR2, altitude__mslm_ VARCHAR2, city VARCHAR2)

What is the lowest population of alessandria where the altitude is less than 197 and density is less than 461.8?
SELECT MIN(population) FROM table_name_37 WHERE altitude__mslm_ < 197 AND city = "alessandria" AND density__inhabitants_km_2__ < 461.8
SELECT MIN("population") FROM "table_name_37" WHERE "alessandria" = "city" AND "altitude__mslm_" < 197 AND "density__inhabitants_km_2__" < 461.8