The beard have brown fur.
The beard doesn't have brown fur.
Beard cannot both have and not have brown fur.
exists e1 x1 x2.(n_beard(x1) & Theme(e1,x2) & Actor(e1,x1) & v_brown(e1) & n_fur(x2))
exists x1.(n_beard(x1) & -exists e1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_brown(e1) & n_fur(x2)))