Schema: CREATE TABLE table_name_93 (stage VARCHAR, winner VARCHAR, mountains_classification VARCHAR, points_classification VARCHAR)
Question: Which stage has a mountains classification of Mariano Piccoli, a points classification of Mario Cipollini and was won by Laudelino Cubino?
SQL: SELECT stage FROM table_name_93 WHERE mountains_classification = "mariano piccoli" AND points_classification = "mario cipollini" AND winner = "laudelino cubino"