CREATE TABLE table_25960 ("Round" FLOAT, "Location" TEXT, "Circuit" TEXT, "Date" TEXT, "Pole Position" TEXT, "Winning Driver" TEXT, "Winning Team" TEXT)

In which location is aci vallelunga circuit?
SELECT "Location" FROM table_25960 WHERE "Circuit" = 'ACI Vallelunga Circuit'
SELECT "Location" FROM "table_25960" WHERE "Circuit" = 'ACI Vallelunga Circuit'