A dog and two birds.
The dog is barking at the birds.
Not every dog has to be barking.
exists x1 x2.(a_topic(x1) & n_bird(x1) & card_eq_2(x1) & of(x1,x2) & n_dog(x2))
exists e1 x1 x2.(n_bird(x2) & n_dog(x1) & at(e1,x2) & Actor(e1,x1) & v_bark(e1))