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_name_16 (start VARCHAR, main_host VARCHAR, winning_mentor VARCHAR)

### Question ###
What is the start date with Luke Jacobz hosting and Dannii Minogue as a winning mentor?

### Accurate SQL ###

SELECT start FROM table_name_16 WHERE main_host = "luke jacobz" AND winning_mentor = "dannii minogue"