user: Question: What is the die size(mm 2) for model SGX531?
Columns: ['Model', 'Year', 'Die Size (mm 2 ) [1]', 'Config core [2]', 'MTriangles/s [1]', 'MPixel/s [1]', 'Bus width ( bit )', 'DirectX', 'OpenGL', 'OpenGL ES', 'GFLOPS(@ 200MHz)', 'Frequency']
Types: ['text', 'text', 'text', 'text', 'real', 'real', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['SGX520', 'Jul 2005', '2.6@65nm', '1/1', 7.0, 100.0, '32-128', 'N/A', 'N/A', '2.0', '0.8', 200.0]
SQL:

assistant: SELECT "Die Size (mm 2 ) [1]" FROM "Table" WHERE "Model" = 'SGX531';