two dogs play on the dry ground.
The ground under the dogs is dry.
The ground the dogs are playing on may not always be under them.
exists e1 s1 x1 x2.(n_ground(x2) & a_dry(s1) & Theme(s1,x2) & on(e1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_2(x1))
exists s1 x1 x2.(n_dog(x2) & n_ground(x1) & Theme(s1,x1) & a_dry(s1) & under(x1,x2))