user: Question: What is the Drawn has an Against smaller than 20 and Points of 15?
Columns: ['Position', 'Team', 'Points', 'Played', 'Drawn', 'Lost', 'Against', 'Difference']
Types: ['real', 'text', 'real', 'real', 'real', 'real', 'real', 'text']
Sample row: [1.0, 'AA das Palmeiras', 19.0, 10.0, 1.0, 0.0, 11.0, '19']
SQL:

assistant: SELECT "Drawn" FROM "Table" WHERE "Against" < 20.0 AND "Points" = 15.0;