user: Question: How many people attended games at alberto picco stadium?
Columns: ['Team', 'Home city', 'Stadium', 'Capacity', '2011-12 season']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['Ascoli', 'Ascoli Piceno', 'Cino e Lillo Del Duca', 20550.0, '15th in Serie B']
SQL:

assistant: SELECT "Capacity" FROM "Table" WHERE "Stadium" = 'alberto picco';