(a) What are the current arrangements regarding the shared rail infrastructure between the Passenger Rail Agency of South Africa (Prasa) and Transnet, (b)(i) how often is the specified arrangement reviewed and (ii) how are such reviews conducted, (c)(i) what is the total length of the shared infrastructure and (ii) what is the length of the rail that has been transferred for use by (aa) Prasa and (bb) Transnet, (d) what are the current financial arrangements in this regard, (e) what amounts were (i) paid to Transnet and (ii) received from Transnet in each month in the past three financial years?