The rottweiller is laying with its head and paws on the first step of the green carpeted stair.
The rottweiller  is laying with its head
Rottweiller is laying with its head doesn't imply on first step.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6.(n_stair(x6) & a_carpeted(s3) & Theme(s3,x6) & a_green(s2) & Theme(s2,x6) & n_step(x5) & a_first(s1) & Theme(s1,x5) & n_paw(x4) & n_head(x3) & subset_of(x4,x2) & subset_of(x3,x2) & of(x2,x1) & n_thing(x1) & n_rottweiller(x1) & on(e1,x5) & of(x5,x6) & with(e1,x2) & Actor(e1,x1) & v_lay(e1))
exists e1 x1 x2.(n_head(x2) & of(x2,x1) & n_thing(x1) & n_rottweiller(x1) & with(e1,x2) & Actor(e1,x1) & v_lay(e1))