A black and white dog standing on its hind legs on carpeting in front of a chair.
A dog is walking on the carpet in front of a chair.
A dog can not both walk and stand on its hind legs at the same time. Just because it is standing on its hind legs does not mean it is walking. It may be standing still or jumping up and down.
exists s1 s2 s3 x1 x2 x3 x4 x5 x6.(a_topic(x1) & on(x1,x3) & on(x3,x4) & in(x4,x5) & of(x5,x6) & n_chair(x6) & n_front(x5) & n_carpeting(x4) & n_leg(x3) & a_hind(s3) & Theme(s3,x3) & of(x3,x1) & n_thing(x1) & n_standing(x1) & of(x1,x2) & n_dog(x2) & a_white(s2) & Theme(s2,x1) & a_black(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(n_carpet(x2) & in(e1,x3) & of(x3,x4) & n_chair(x4) & n_front(x3) & on(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_dog(x1))