CREATE TABLE table_5627 ("Stage" TEXT, "Winner" TEXT, "General classification" TEXT, "Points classification" TEXT, "Mountains classification" TEXT, "Team classification" TEXT)

What is the general classification of Mapei-clas in stage 12?
SELECT "General classification" FROM table_5627 WHERE "Team classification" = 'mapei-clas' AND "Stage" = '12'
SELECT "General classification" FROM "table_5627" WHERE "Stage" = '12' AND "Team classification" = 'mapei-clas'