CREATE TABLE table_21804557_18 (stage__winner_ VARCHAR, metas_volantes_classification VARCHAR)

WHO WAS THE STAGE WINNER IN THE STAGE WHERE MICHAEL ALBASINI WON THE METAS VOLANTES CLASSIFICATION?
SELECT stage__winner_ FROM table_21804557_18 WHERE metas_volantes_classification = "Michael Albasini"
SELECT "stage__winner_" FROM "table_21804557_18" WHERE "Michael Albasini" = "metas_volantes_classification"