A rock climber on a vertical cliff.
A person is falling from a mountain.
falling and climbing are not the same.
exists s1 x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_cliff(x3) & a_vertical(s1) & Theme(s1,x3) & n_climber(x1) & of(x1,x2) & n_rock(x2))
exists e1 x1 x2.(from(e1,x2) & n_mountain(x2) & Actor(e1,x1) & v_fall(e1) & n_person(x1))