Senator BIRMINGHAM (South Australia—Minister for Finance, Minister for Trade, Tourism and Investment, Vice-President of the Executive Council and Leader of the Government in the Senate) (15:07): Convention certainly is that, if a question on these matters is to be raised at the conclusion of question time, notice is usually given. I am not aware that notice has been given to my office in relation to following up on this question. I am happy, outside of the chamber, to seek to follow up for the senator, but I regret that I am not in a position to give him an explanation at that time.