A black and white puppy runs along the gravel road.
a puppy runs down a road
Both sentences has a subject that runs
exists s1 s2 s3 x1 x2 x3.(n_road(x2) & of(x2,x3) & n_gravel(x3) & a_topic(x1) & along(x1,x2) & n_run(x1) & a_puppy(s3) & Theme(s3,x1) & a_white(s2) & Theme(s2,x1) & a_black(s1) & Theme(s1,x1))
exists e1 x1 x2.(down(e1,x2) & n_road(x2) & Actor(e1,x1) & v_run(e1) & n_puppy(x1))