There are young men playing a game of football, one man has been tackled by another player.
the quarterback is getting sacked
We don't know that the man is the quarterback.
exists e1 p1 x1 x2 x3 x4.(n_player(x3) & Actor(e1,x4) & n_player(x4) & -(x4 = x3) & Theme(e1,x2) & v_tackle(e1) & n_man(x2) & card_eq_1(x2) & exists e2 s1 x5 x6 x7 x8.((x1 = x5) & Theme(e2,x7) & Actor(e2,x6) & v_play(e2) & of(x7,x8) & n_football(x8) & n_game(x7) & (x5 = x6) & n_man(x5) & a_young(s1) & Theme(s1,x5)))
exists e1 p1 x1.(n_quarterback(x1) & exists e2.(Theme(e2,x1) & v_sack(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_get(e1))