Two players hustle during a soccer game.
Two opposing players fight for a ball.
You can not infer there is a ball.
exists e1 x1 x2 x3.(during(e1,x2) & n_game(x2) & of(x2,x3) & n_soccer(x3) & Actor(e1,x1) & v_hustle(e1) & n_player(x1) & card_eq_2(x1))
exists s1 x1 x2 x3.(a_topic(x1) & for(x1,x3) & n_ball(x3) & n_fight(x1) & of(x1,x2) & n_player(x2) & a_opposing(s1) & Theme(s1,x1) & card_eq_2(x1))