A rock face is covered with snow and ice.
A rocky field is covered with snow and ice.
It cannot be a face and a field simultaneously.
exists e1 x1 x2 x3 x4 x5.(with(e1,x3) & n_ice(x5) & n_snow(x4) & subset_of(x5,x3) & subset_of(x4,x3) & Theme(e1,x1) & v_cover(e1) & n_face(x1) & of(x1,x2) & n_rock(x2))
exists e1 s1 x1 x2 x3 x4.(with(e1,x2) & n_ice(x4) & n_snow(x3) & subset_of(x4,x2) & subset_of(x3,x2) & Theme(e1,x1) & v_cover(e1) & n_field(x1) & a_rocky(s1) & Theme(s1,x1))