Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_24912 ( "Team" text, "Outgoing manager" text, "Manner of departure" text, "Date of vacancy" text, "Replaced by" text, "Date of appointment" text )

### Question ###
Who was the replacement manager for the vacancy of 12 Dec 2009?

### Accurate SQL ###

SELECT "Replaced by" FROM table_24912 WHERE "Date of vacancy" = '12 Dec 2009'