CREATE TABLE table_name_93 (points_classification VARCHAR(255), young_rider_classification VARCHAR(255), general_classification VARCHAR(255))
What is the point classification with chris anker sørensen as the young rider classification and Christian vande velde as the general classification?
    
SQL: SELECT points_classification FROM table_name_93 WHERE young_rider_classification = "chris anker sørensen" AND general_classification = "christian vande velde"