Question: Who replaced the outgoing manager Hüsnü Özkara? 
SQL: SELECT "Replaced by" FROM "1-27091128-3" WHERE "Outgoing manager" = 'Hüsnü Özkara';

Question: When was the date of vacancy for the manager of Kartalspor? 
SQL: SELECT "Date of vacancy" FROM "1-27091128-3" WHERE "Team" = 'Kartalspor';

Question: Who replaced the manager of Akhisar B.G.S.?
SQL: SELECT "Replaced by" FROM "1-27091128-3" WHERE "Team" = 'Akhisar B.G.S.';

Question: Which team replaced their manager with Serhat Güller?
SQL: SELECT "Team" FROM "1-27091128-3" WHERE "Replaced by" = 'Serhat Güller';