user: Question: When the goals against were higher than 30, what was the average number of draws?
Columns: ['Position', 'Club', 'Played', 'Points', 'Wins', 'Draws', 'Losses', 'Goals for', 'Goals against', 'Goal Difference']
Types: ['real', 'text', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Málaga', 10.0, 15.0, 6.0, 3.0, 1.0, 21.0, 15.0, 6.0]
SQL:

assistant: SELECT AVG("Draws") FROM "Table" WHERE "Goals against" > 30.0;