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_27133147_3 ( date_of_vacancy VARCHAR, incoming_head_coach VARCHAR )

### Question ###
If the incoming head coach is Carlos Azenha, what is the date of vacancy?

### Accurate SQL ###

SELECT date_of_vacancy FROM table_27133147_3 WHERE incoming_head_coach = "Carlos Azenha"