CREATE TABLE table_41120 ("Stage  ( Winner ) " TEXT, "General Classification" TEXT, "Young Classification" TEXT, "Mountains Classification" TEXT, "Sprint Classification" TEXT, "Team Classification" TEXT)

Which young classification has general classification of Christian Vande Velde for Team Columbia and Mark Cavendish?
SELECT "Young Classification" FROM table_41120 WHERE "General Classification" = 'christian vande velde' AND "Team Classification" = 'team columbia' AND "Sprint Classification" = 'mark cavendish'
SELECT "Young Classification" FROM "table_41120" WHERE "General Classification" = 'christian vande velde' AND "Sprint Classification" = 'mark cavendish' AND "Team Classification" = 'team columbia'