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_25531112_2 ( challenge VARCHAR, event VARCHAR )

### Question ###
Who made the challenge in the Australian Grand Prix?

### Accurate SQL ###

SELECT challenge FROM table_25531112_2 WHERE event = "Australian Grand Prix"