in relation to land—
| (a) | means the person in whom the ownership of that land is vested or in whose name that land is registered or, if that person is absent from the Republic or his whereabouts are unknown, his representative in the Republic; |
| (b) | which has been sold, includes a buyer in whose name such land has not yet been registered; |
| (c) | subject to a usufruct, means the usufructuary; |
| (d) | under the control of a local authority, means that local authority; |