Two dogs are playing rough in a green field of grass.
Two dogs chase each other in a field.
Just because two dogs are playing rough in a green field of grass does not mean they chase each other.
exists e1 s1 x1 x2 x3 x4.(in(e1,x3) & of(x3,x4) & n_grass(x4) & n_field(x3) & a_green(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_rough(x2) & n_dog(x1) & card_eq_2(x1))
exists x1 x2.(a_topic(x1) & all x3.(n_other(x3) -> exists s1 x4.(Theme(s1,x3) & Actor(s1,x2) & a_chase(s1) & in(x3,x4) & n_field(x4))) & (x1 = x2) & n_dog(x1) & card_eq_2(x1))