user: Question: WHAT IS THE LOWEST DIAMETER FOR A LATITIDE OF 52.0S?
Columns: ['Name', 'Latitude', 'Longitude', 'Diameter (km)', 'Year named']
Types: ['text', 'text', 'text', 'real', 'real']
Sample row: ['Adrasthea Tesserae', '30.0N', '55.0E', 750.0, 1997.0]
SQL:

assistant: SELECT MIN("Diameter (km)") FROM "Table" WHERE "Latitude" = '52.0S';