A dog on the edge of a body of water.
A dog is playing.
A dog on the edge of a body of water is not always playing.
exists x1 x2 x3 x4.(n_edge(x2) & a_topic(x1) & on(x1,x2) & of(x2,x3) & of(x3,x4) & n_water(x4) & n_body(x3) & n_dog(x1))
exists e1 x1.(Actor(e1,x1) & v_play(e1) & n_dog(x1))