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

Question: What days is greenock morton vacant?
SQL: SELECT "date_of_vacancy" FROM "managerial_changes" WHERE "team"='Greenock Morton';

Question: What are the dates of the outgoing manager colin hendry does appointments? 
SQL: SELECT "date_of_appointment" FROM "managerial_changes" WHERE "outgoing_manager"='Colin Hendry';

Question: What teams does jim mcinally manage?
SQL: SELECT "team" FROM "managerial_changes" WHERE "outgoing_manager"='Jim McInally';

Question: What days are vacant that were replaced by john brown?
SQL: SELECT "date_of_vacancy" FROM "managerial_changes" WHERE "replaced_by"='John Brown';