CREATE TABLE table_47618 ("Portfolio" TEXT, "Minister" TEXT, "Took office" TEXT, "Left office" TEXT, "Party" TEXT)

What is Left Office, when Took Office is '11 June 2001', and when Minister is 'Mirko Tremaglia'?
SELECT "Left office" FROM table_47618 WHERE "Took office" = '11 june 2001' AND "Minister" = 'mirko tremaglia'
SELECT "Left office" FROM "table_47618" WHERE "Minister" = 'mirko tremaglia' AND "Took office" = '11 june 2001'