CREATE TABLE "managerial_changes" (
  "team" text,
  "outgoing_manager" text,
  "manner_of_departure" text,
  "date_of_vacancy" text,
  "replaced_by" text,
  "date_of_appointment" text,
  "position" text
);

Question: Who is the outgoing manager when the date of vacancy is 13 october 2008?
SQL: SELECT "outgoing_manager" FROM "managerial_changes" WHERE "date_of_vacancy"='13 october 2008';