Table schema:
CREATE TABLE table_name_70 (area_km_2 INTEGER, population_in_millions VARCHAR, pop_density_people_km_2 VARCHAR, member_state VARCHAR)

Question: What is the area km2 of the area with a pop density people/km2 larger than 91, is a member state of Italy, and had less than 58.8 population in millions?
SQL: SELECT SUM(area_km_2) FROM table_name_70 WHERE pop_density_people_km_2 > 91 AND member_state = "italy" AND population_in_millions < 58.8