A man on a cliff.
The man is lying down.
The man cannot be both on a cliff and lying down.
exists x1 x2.(a_topic(x1) & on(x1,x2) & n_cliff(x2) & n_man(x1))
exists e1 s1 x1.(n_man(x1) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_lie(e1))