A dog trotting down the beach with a toy in its mouth.
A dog is running back to its owner.
just because a dog is trotting down the beach with a toy in its mouth doesn't imply the dog is running back to its owner.
exists e1 s1 x1 x2 x3 x4 x5.(n_mouth(x5) & of(x5,x3) & n_thing(x3) & n_beach(x3) & a_topic(x1) & with(e1,x4) & in(x4,x5) & n_toy(x4) & a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_trot(e1) & (x1 = x2) & n_dog(x1))
exists e1 x1 x2.(to(e1,x2) & n_owner(x2) & of(x2,x1) & n_thing(x1) & r_back(e1) & Actor(e1,x1) & v_run(e1) & n_dog(x1))