user: Question: Which Altitude (mslm) has a Density (inhabitants/km 2) smaller than 1233, and a Rank of 9th?
Columns: ['Rank', 'Common of', 'Population', 'Area (km 2 )', 'Density (inhabitants/km 2 )', 'Altitude (mslm)']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['1st', 'Torino', 907563.0, 130.7, 6943.9, 239.0]
SQL:

assistant: SELECT "Altitude (mslm)" FROM "Table" WHERE "Density (inhabitants/km 2 )" < 1233.0 AND "Rank" = '9th';