CREATE TABLE table_55587 ("Stage  ( Winner ) " TEXT, "General Classification" TEXT, "Mountains Classification" TEXT, "Points Classification" TEXT, "Sprints classification" TEXT, "Team Classification" TEXT)

What Sprints classification has the Points classification, Mark Cavendish and Team classification, Caisse D'epargne?
SELECT "Sprints classification" FROM table_55587 WHERE "Points Classification" = 'mark cavendish' AND "Team Classification" = 'caisse d''epargne'
SELECT "Sprints classification" FROM "table_55587" WHERE "Points Classification" = 'mark cavendish' AND "Team Classification" = 'caisse d\'epargne'