(a) How many potential tour guides have been recruited to take part in her department’s Foreign Language Training Programme in Mandarin Chinese and Russian in the 2016-17 financial year, (b) what does her department consider to be the optimum number of Mandarin-proficient guides, given increasing number of tourist arrivals from China and Taiwan, (c) what are the total number of Mandarin-proficient guides currently in service in South Africa and (d) what are the further relevant details in this regard?