Two dogs run down a dirt path in the forest.
The birds are singing in the woods.
The subjects cannot be both dogs and birds.
exists e1 s1 x1 x2 x3 x4.(n_forest(x4) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & in(x2,x4) & n_path(x2) & of(x2,x3) & n_dirt(x3) & n_dog(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_wood(x2) & n_bird(x1) & in(e1,x2) & Actor(e1,x1) & v_sing(e1))