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_17039232_3 (replaced_by VARCHAR, date_of_vacancy VARCHAR, position_in_table VARCHAR)

### Question ###
Name the replaced by where date of vacancy is 31 december 2008 where position in table is 1st

### Accurate SQL ###

SELECT replaced_by FROM table_17039232_3 WHERE date_of_vacancy = "31 December 2008" AND position_in_table = "1st"