German shepherd running in ocean surf
The dog is running after his owner.
Just because A German shepherd running in ocean surf  does not mean it is running after its owner.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x3) & n_surf(x3) & of(x3,x4) & n_ocean(x4) & Actor(e1,x2) & v_run(e1) & (x1 = x2) & n_shepherd(x1) & a_german(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_owner(x2) & of(x2,x1) & n_male(x1) & n_dog(x1) & after(e1,x2) & Actor(e1,x1) & v_run(e1))