The dog in the red vest runs in the field.
There is a dog in the picture.
A dog in a vest is still a dog.
exists s1 x1 x2 x3 x4.(n_field(x4) & n_run(x2) & of(x2,x3) & n_vest(x3) & a_red(s1) & Theme(s1,x2) & n_dog(x1) & a_topic(x1) & in(x1,x2) & in(x2,x4))
exists p1 x1 x3.(n_picture(x3) & exists x2.((x1 = x2) & in(x2,x3) & n_dog(x2)))