A climber hangs from a rock face while another watches.
A climber hangs from a rock on the side of Mt. Everest.
A rock is not necessarily on the side of Mt. Everest.
exists e1 x1 x2 x3 x4 x5.(n_watch(x4) & while(e1,x5) & n_watch(x5) & -(x5 = x4) & from(e1,x2) & n_face(x2) & of(x2,x3) & n_rock(x3) & Actor(e1,x1) & v_hang(e1) & n_climber(x1))
exists e1 s1 x1 x2 x3 x4 x5.(ne_nam_mt(x4) & a_.(s1) & Theme(s1,x4) & n_side(x3) & from(e1,x2) & on(x2,x3) & of(x3,x4) & on(x4,x5) & ne_tim_everest(x5) & n_rock(x2) & Actor(e1,x1) & v_hang(e1) & n_climber(x1))