user: Question: what's the maximum position with winnings  $50,000
Columns: ['Position', 'Driver', 'Points', 'Winnings', 'Series']
Types: ['real', 'text', 'real', 'text', 'text']
Sample row: [1.0, 'Mark Martin', 61.0, '$225,000', 'NASCAR Winston Cup']
SQL:

assistant: SELECT MAX("Position") FROM "Table" WHERE "Winnings" = '$50,000';