CREATE TABLE table_56412 ("Judge" TEXT, "State" TEXT, "Born/Died" TEXT, "Active service" TEXT, "Chief Judge" TEXT, "Senior status" TEXT, "Appointed by" TEXT, "Reason for termination" TEXT)

Who was Judge Jack Edward Tanner's chief judge?
SELECT "Chief Judge" FROM table_56412 WHERE "Judge" = 'jack edward tanner'
SELECT "Chief Judge" FROM "table_56412" WHERE "Judge" = 'jack edward tanner'