(a) What amount did (a) her department and (b) each entity reporting to her spend on advertising on the (i)Africa News Network 7 channel, (ii) SA Broadcasting Corporation (aa)television channels and (bb) radio stations, (iii) national commercial radio stations and (iv) community (aa) television and (bb) radio stations (aaa) in the 2015-16 financial year and (bbb)since April 2016?"