user: Question: How many against have a difference of 6, with a played greater than 19?
Columns: ['Position', 'Team', 'Points', 'Played', 'Drawn', 'Lost', 'Against', 'Difference']
Types: ['real', 'text', 'real', 'real', 'real', 'real', 'real', 'text']
Sample row: [1.0, 'Paulistano', 30.0, 19.0, 2.0, 3.0, 15.0, '38']
SQL:

assistant: SELECT COUNT("Against") FROM "Table" WHERE "Difference" = '6' AND "Played" > 19.0;