Three dogs run along a grassy yard.
Dogs running after a ball in the grass.
It's not apparent there is a ball.
exists e1 s1 x1 x2.(along(e1,x2) & n_yard(x2) & a_grassy(s1) & Theme(s1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & card_eq_3(x1))
exists e1 x1 x2 x3 x4.(n_grass(x4) & a_topic(x1) & after(e1,x3) & in(x3,x4) & n_ball(x3) & Actor(e1,x2) & v_run(e1) & (x1 = x2) & n_dog(x1))