Any person in whom land is vested as a trustee shall be assessed and liable in
respect of land tax as if he or she were beneficially entitled to the land--
Provided that where he or she is the owner of different lands in severalty, in
trust for different persons who are not for any reason liable to be jointly
assessed, the land tax so payable by the person shall be separately assessed
in respect of each of those lands--
Provided also that when a trustee is also the beneficial owner of other land,
he or she shall be separately assessed for that land, and for the land of
which he or she is a trustee, unless for any reason he or she is liable to be
jointly assessed independently of this section.