Two large dogs run in the sand.
Some pups are playing with a dog toy.
We can't see any dog toy.
exists e1 s1 x1 x2.(n_sand(x2) & in(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_large(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(with(e1,x2) & n_toy(x2) & of(x2,x3) & n_dog(x3) & Actor(e1,x1) & v_play(e1) & n_pup(x1))