two dogs play on the dry ground.
The dogs are playing in a lake.
One cannot be on dry ground and in a lake at the same time.
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 e1 x1 x2.(n_dog(x1) & in(e1,x2) & n_lake(x2) & Actor(e1,x1) & v_play(e1))