A horse walking by the side of the water pulling something.
A horse pulls his owner by the beach
The fact that a horse pulls something by water does not mean that it is pulling his owner by the beach.
exists e1 x1 x2 x3 x4 x5 x6.(n_water(x4) & n_side(x3) & a_topic(x1) & by(x1,x3) & of(x3,x4) & Theme(e1,x6) & Actor(e1,x5) & v_pull(e1) & n_thing(x6) & (x4 = x5) & n_walking(x1) & of(x1,x2) & n_horse(x2))
exists e1 x1 x2 x3.(n_beach(x3) & by(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_pull(e1) & n_owner(x2) & of(x2,x1) & n_male(x1) & n_horse(x1))