A white dog has its head on the ground.
A white dog and block dog lay their head's on the ground.
Just because a white dog has its head on the ground does not indicate that a white dog and block dog lay their head's on the ground.
exists e1 s1 x1 x2 x3.(n_ground(x3) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_head(x2) & of(x2,x1) & n_thing(x1) & n_dog(x1) & a_white(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(n_ground(x7) & on(e1,x7) & Theme(e1,x5) & Actor(e1,x1) & v_lay(e1) & n_'s(x5) & of(x5,x6) & n_head(x6) & of(x5,x2) & n_thing(x2) & n_dog(x3) & of(x3,x4) & n_block(x4) & n_dog(x2) & subset_of(x3,x1) & subset_of(x2,x1) & a_white(s1) & Theme(s1,x1))