Two dogs playing in a lake.
There is only one dog.
There cannot be two dogs and one dog together.
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_lake(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_dog(x1) & card_eq_2(x1))
exists p1 x1 x2.((x1 = x2) & n_dog(x2) & card_eq_1(x2) & r_only(x2))