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_28181347_6 ( replaced_by VARCHAR, date_of_vacancy VARCHAR )

### Question ###
In football league one, what coach was hired as a replacement on 8 October 2007

### Accurate SQL ###

SELECT replaced_by FROM table_28181347_6 WHERE date_of_vacancy = "8 October 2007"