user: Question: What is the lowest number conceded for the team that had less than 8 wins, scored 21, and had less than 23 points?
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 MIN("Conceded") FROM "Table" WHERE "Wins" < 8.0 AND "Scored" = 21.0 AND "Points" < 23.0;