Two dogs playing in the sand at the beach.
Two dogs are chasing after a ball on the beach.
It cannot be inferred that the dogs are chasing a ball.
exists e1 x1 x2 x3 x4.(n_beach(x4) & n_sand(x3) & a_topic(x1) & at(e1,x4) & in(e1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_dog(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_beach(x3) & after(e1,x2) & on(x2,x3) & n_ball(x2) & Actor(e1,x1) & v_chase(e1) & n_dog(x1) & card_eq_2(x1))