Senator EDWARDS (South Australia) (14:20): Mr President, I ask a further supplementary question. Given that the South Australian Premier and the employment minister were not aware that their own Treasury department had conducted this modelling, isn't this just another example of Labor governments concealing tax modelling to mislead the Australian people about the true impact of this tax? When will the government stop hiding behind the assumptions on which this modelling depends and come clean to the Australian people? The PRESIDENT: Order! Firstly, the minister can only answer that part of the question which pertains to the portfolio that she is representing. Minister, I ask you to address that part that you can.