user: Question: What is the average Position, when Goal Difference is "17", and when Wins is greater than 13?
Columns: ['Position', 'Played', 'Points', 'Wins', 'Draws', 'Losses', 'Goals for', 'Goals against', 'Goal Difference']
Types: ['real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: [1.0, 30.0, 43.0, 17.0, 9.0, 4.0, 68.0, 35.0, 33.0]
SQL:

assistant: SELECT AVG("Position") FROM "Table" WHERE "Goal Difference" = 17.0 AND "Wins" > 13.0;