user: Question: What was the profit before tax when the turnover was 431.06?
Columns: ['Period ended', 'Turnover (£m)', 'Profit before tax (£m)', 'Dividend per share (p)', 'Adjusted earnings per share diluted (p)']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['29 February 2012', '551.92', '30.55', '6.0', '8.97']
SQL:

assistant: SELECT "Profit before tax (£m)" FROM "Table" WHERE "Turnover (£m)" = '431.06';