user: 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?
Columns: ['Rank', 'City', 'Population', 'Area (km 2 )', 'Density (inhabitants/km 2 )', 'Altitude (mslm)']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['1st', 'Alessandria', 94191.0, 203.97, 461.8, 95.0]
SQL:

assistant: SELECT AVG("Area (km 2 )") FROM "Table" WHERE "Density (inhabitants/km 2 )" < 206.2 AND "Altitude (mslm)" < 85.0;