The head of a child with dark glasses is in focus.
The child is not wearing glasses.
The child either wears or not wears glases, but not both simultaneously,
exists p1 s1 x1 x2 x3.(n_head(x1) & exists x4.(in(x1,x4) & n_focus(x4)) & with(x1,x3) & n_glass(x3) & a_dark(s1) & Theme(s1,x3) & of(x1,x2) & n_child(x2))
exists x1.(n_child(x1) & -exists e1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_glass(x2)))