user: Question: What is the average number conceded for hte team that had less than 19 points, played more than 18 games and had a position less than 10?
Columns: ['Position', 'Team', 'Played', 'Wins', 'Draws', 'Losses', 'Scored', 'Conceded', 'Points']
Types: ['real', 'text', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Cerro Porteño', 18.0, 12.0, 5.0, 1.0, 31.0, 13.0, 41.0]
SQL:

assistant: SELECT AVG("Conceded") FROM "Table" WHERE "Points" < 19.0 AND "Position" < 10.0 AND "Played" > 18.0;