Two dogs play with a human and a disc in the snow.
Dogs fighting for a frisbee.
Not all playing is fighting.  Not all discs are a frisbee.
exists e1 s1 x1 x2 x3 x4.(n_snow(x4) & in(e1,x4) & with(e1,x3) & n_disc(x3) & with(e1,x2) & n_disc(x2) & a_human(s1) & Theme(s1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(a_topic(x1) & for(e1,x3) & n_frisbee(x3) & Actor(e1,x2) & v_fight(e1) & (x1 = x2) & n_dog(x1))