(1) Did the Passenger Rail Agency of South Africa (PRASA) have any processes, procedures and mechanisms in place to ascertain whether two certain companies (names furnished) and/or their subsidiaries were ever under investigation for corruption (a) locally or (b) internationally; if not, why not; if so, (i) what are the relevant details and (ii) what did these processes, procedures and mechanisms reveal; (2) why were the specified two companies appointed by PRASA?