CREATE TABLE table_7212 ("Team" TEXT, "Outgoing manager" TEXT, "Manner of departure" TEXT, "Date of vacancy" TEXT, "Replaced by" TEXT, "Date of appointment" TEXT)

What manner of departure was Dick Advocaat replaced by?
SELECT "Manner of departure" FROM table_7212 WHERE "Replaced by" = 'dick advocaat'
SELECT "Manner of departure" FROM "table_7212" WHERE "Replaced by" = 'dick advocaat'