user: Question: What average played has an against less than 15?
Columns: ['Position', 'Team', 'Points', 'Played', 'Drawn', 'Lost', 'Against', 'Difference']
Types: ['real', 'text', 'real', 'real', 'real', 'real', 'real', 'text']
Sample row: [1.0, 'São Paulo Athletic', 15.0, 9.0, 1.0, 1.0, 15.0, '8']
SQL:

assistant: SELECT AVG("Played") FROM "Table" WHERE "Against" < 15.0;