Which young classification has general classification of Christian Vande Velde for Team Columbia and Mark Cavendish?
CREATE TABLE "jersey_progress" (
  "stage_winner" text,
  "general_classification" text,
  "young_classification" text,
  "mountains_classification" text,
  "sprint_classification" text,
  "team_classification" text
);
SELECT "young_classification" FROM "jersey_progress" WHERE "general_classification"='christian vande velde' AND "team_classification"='team columbia' AND "sprint_classification"='mark cavendish';