  We revisit the solutions of the Wheeler-DeWitt (WDW) equation inside the
horizons of spherical black holes and planar topological black holes in
arbitrary dimensions. For these systems, the solutions of the equations are
found to have the same form. Therefore, Yeom's Annihilation-to-nothing
interpretation can be applied to each case. We have introduced the Dirac-type
WDW equations into quantum cosmology in a recent paper, so we also apply our
formulation to the quantum theory of the interior of the black hole in order to
obtain the solution of the spinorial wave function. The shape of the wave
packet of the spinorial WDW wave function indicates that the variation of
Yeom's interpretation holds in this scheme.
