user: Question: What is the total area of drakenstein and a population less than 251262?
Columns: ['Name', 'Seat', 'Population (2011)', 'Area (km 2 )', 'Density (inhabitants/km 2 )']
Types: ['text', 'text', 'real', 'real', 'real']
Sample row: ['Witzenberg', 'Ceres', 115946.0, 10753.0, 10.8]
SQL:

assistant: SELECT SUM("Area (km 2 )") FROM "Table" WHERE "Name" = 'drakenstein' AND "Population (2011)" < 251262.0;