Two football players chase after a the ball.
A player from each team is after the ball.
We don't know that the players are from each team.
exists x1 x2 x3 x4 x5.(n_ball(x4) & a_topic(x1) & after(x1,x4) & Time(x4,x5) & n_a(x5) & Time(x1,x3) & n_chase(x3) & n_player(x1) & of(x1,x2) & n_football(x2) & card_eq_2(x1))
exists x1 x3.(n_ball(x3) & all x2.(n_team(x2) -> exists p1.(after(x1,x3) & from(x1,x2))) & n_player(x1))