A man in shorts climbs a rock face.
A woman falls from a rock face.
There could be either a man or a woman.
exists e1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_climb(e1) & n_face(x3) & of(x3,x4) & n_rock(x4) & in(x1,x2) & n_shorts(x2) & n_man(x1))
exists e1 x1 x2 x3.(from(e1,x2) & n_face(x2) & of(x2,x3) & n_rock(x3) & Actor(e1,x1) & v_fall(e1) & n_woman(x1))