Two puppies walking on stones.
Two puppies laying down.
Puppies walking on stones can not be laying down.
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_stone(x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_puppy(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(a_topic(x1) & a_down(s1) & Manner(e1,s1) & Actor(e1,x2) & v_lay(e1) & (x1 = x2) & n_puppy(x1) & card_eq_2(x1))