user: Question: Which young classification has general classification of Christian Vande Velde for Team Columbia and Mark Cavendish?
Columns: ['Stage (Winner)', 'General Classification', 'Young Classification', 'Mountains Classification', 'Sprint Classification', 'Team Classification']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['0 Stage 1 ( Mark Cavendish )', 'Mark Cavendish', 'Mark Cavendish', 'Dominique Rollin', 'Mark Cavendish', 'Team Columbia']
SQL:

assistant: SELECT "Young Classification" FROM "Table" WHERE "General Classification" = 'Christian Vande Velde' AND "Team Classification" = 'Team Columbia' AND "Sprint Classification" = 'Mark Cavendish';