With respect to the Centurion Aerospace Village (CAV) in Gauteng, has any (a) person(s) and/or (b) companies concluded a tenancy agreement with the CAV; if not, why not; if so, (i) what are their names, (ii) when did they conclude the specified agreement, (iii) when did they assume occupation of the building and (iv) when is the tenancy agreement with CAV set to be concluded?