A dog jumps off the stairs.
A dog jumping.
off the stairs is where the dog is jumping
exists e1 s1 x1 x2.(n_stair(x2) & a_off(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_dog(x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_jump(e1) & (x1 = x2) & n_dog(x1))