how many new managers replaced  manager(s) who resigned? 
CREATE TABLE table_28164986_4 (incoming_manager VARCHAR, manner_of_departure VARCHAR)
SELECT COUNT(incoming_manager) FROM table_28164986_4 WHERE manner_of_departure = "Resigned"
### Context: CREATE TABLE table_28164986_4 (incoming_manager VARCHAR, manner_of_departure VARCHAR) ### Question: how many new managers replaced  manager(s) who resigned?  ### Answer: SELECT COUNT(incoming_manager) FROM table_28164986_4 WHERE manner_of_departure = "Resigned"