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: Who replaced the outgoing manager Hüsnü Özkara? 
SQL: SELECT "replaced_by" FROM "managerial_changes" WHERE "outgoing_manager"='Hüsnü Özkara';

Question: When was the date of vacancy for the manager of Kartalspor? 
SQL: SELECT "date_of_vacancy" FROM "managerial_changes" WHERE "team"='Kartalspor';

Question: Who replaced the manager of Akhisar B.G.S.?
SQL: SELECT "replaced_by" FROM "managerial_changes" WHERE "team"='Akhisar B.G.S.';

Question: Which team replaced their manager with Serhat Güller?
SQL: SELECT "team" FROM "managerial_changes" WHERE "replaced_by"='Serhat Güller';