Two white dogs are drinking water out of a lake.
The black horse drinks water.
There can be either two dogs or a horse.
exists e1 s1 x1 x2 x3.(of(e1,x3) & n_lake(x3) & r_out(e1) & Theme(e1,x2) & Actor(e1,x1) & v_drink(e1) & n_water(x2) & n_dog(x1) & a_white(s1) & Theme(s1,x1) & card_eq_2(x1))
exists s1 x1 x2 x3.(n_water(x1) & of(x1,x3) & n_drink(x3) & of(x1,x2) & n_horse(x2) & a_black(s1) & Theme(s1,x1) & a_topic(x1))