Two dogs play in the grass.
The dogs are chasing each other.
Two dogs chasing each other in the grass.
exists x1 x2 x3.(n_grass(x3) & a_topic(x1) & in(x1,x3) & n_play(x1) & of(x1,x2) & n_dog(x2) & card_eq_2(x1))
exists x1.(n_dog(x1) & all x2.(n_other(x2) -> exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_chase(e1))))