user: Question: What is the frequency of the model whose part number is ADO520BIAA5DO? 
Columns: ['Model Number', 'Stepping', 'Frequency', 'L2 Cache', 'HT', 'Multi 1', 'V Core', 'TDP', 'Socket', 'Release Date', 'Part Number(s)']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Athlon X2 4450B', 'G2', '2300MHz', '2 × 512 kB', '1.0GHz', '11.5×', '1.15 - 1.25 V', '45 W', 'Socket AM2', 'April 28, 2008', 'ADH445BIAA5DO']
SQL:

assistant: SELECT "Frequency" FROM "Table" WHERE "Part Number(s)" = 'ADO520BIAA5DO';