CHAIRPERSON
I don't know what the people's situation is.  As far as I'm concerned, I'm only leaving tomorrow.  I don't know how urgently other people have to leave.  Mr Sibanyoni's got to catch a flight at six.  I don't know what the critical time to leave would be, taking into account the possible traffic jam on the way to the airport.  So if we go after four, it shouldn't be too long after four otherwise he'll probably miss his aeroplane.