A small brown dog playing with bubbles in grass.
The brown dog is a german shepherd.
Not all dogs are german shepherds.
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & in(x1,x4) & n_grass(x4) & with(x1,x3) & n_bubble(x3) & n_playing(x1) & of(x1,x2) & n_dog(x2) & a_brown(s2) & Theme(s2,x1) & a_small(s1) & Theme(s1,x1))
exists p1 s1 x1.(n_dog(x1) & a_brown(s1) & Theme(s1,x1) & exists x2 x3.((x1 = x2) & n_shepherd(x2) & of(x2,x3) & n_german(x3)))