user: Question: Who was the winner of the race that had a distance of 175.6km?
Columns: ['Stage', 'Route', 'Distance', 'Date', 'Winner']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['P', 'Sittard > Geleen', '4.4km', 'Wednesday, August 20', 'Iván Gutiérrez ( ESP )']
SQL:

assistant: SELECT "Winner" FROM "Table" WHERE "Distance" = '175.6km';