CREATE TABLE table_27573848_18 (points_classification VARCHAR(255), general_classification VARCHAR(255), mountains_classification VARCHAR(255))
If the mountains classification is Mathias Frank, and the General Classification is Fabian Cancellara, what is the Points classification?
    
SQL: SELECT points_classification FROM table_27573848_18 WHERE general_classification = "Fabian Cancellara" AND mountains_classification = "Mathias Frank"