user: Question: What is the lowest Position, when Points 1 is "39", and when Goals Against is greater than 49?
Columns: ['Position', 'Team', 'Played', 'Drawn', 'Lost', 'Goals For', 'Goals Against', 'Goal Difference', 'Points 1']
Types: ['real', 'text', 'real', 'real', 'real', 'real', 'real', 'text', 'text']
Sample row: [1.0, 'Clitheroe', 34.0, 7.0, 5.0, 79.0, 29.0, '+50', '51']
SQL:

assistant: SELECT MIN("Position") FROM "Table" WHERE "Points 1" = '39' AND "Goals Against" > 49.0;