user: Question: When Peter Sagan won the youth classification and Thomas Rabou won the most corageous, who won the sprint classification?
Columns: ['Stage', 'Winner', 'General Classification', 'Youth Classification', 'Mountains Classification', 'Sprint Classification', 'Most Courageous', 'Team Classification']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Mark Cavendish', 'Mark Cavendish', 'Alexander Kristoff', 'Paul Mach', 'Mark Cavendish', 'Maarten Tjallingii', 'Team HTC-Columbia']
SQL:

assistant: SELECT "Sprint Classification" FROM "Table" WHERE "Youth Classification" = 'Peter Sagan' AND "Most Courageous" = 'Thomas Rabou';