A black and white dog is bounding down white steps.
A dog is running down stairs.
Running with steps doesn't mean you are going down stairs.
exists e1 s1 s2 s3 s4 x1 x2.(a_down(s4) & Manner(e1,s4) & Theme(e1,x2) & Actor(e1,x1) & v_bound(e1) & n_step(x2) & a_white(s3) & Theme(s3,x2) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_black(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_stair(x2) & n_dog(x1))