(1) How many properties did the City of Tshwane sell during a land auction which took place on 24 March 2015; (2) what is the full name of the purchaser in respect of each property sold; (3) in light of the fact that the Gauteng MEC for Human Settlements and Cooperative Governance and Traditional Affairs, Mr Jacob Mamabolo, has stated that the City of Tshwane did not follow proper public participation processes to determine whether the properties it intended to sell are necessary for current or future municipal service delivery, what effect will this have on the properties that were sold during the specified auction?