A football player is being tackled by members of the opposing team.
In football, opponents tackle the other team.
If someone is going to tackle then someone is being tackled
exists e1 s1 x1 x2 x3 x4.(n_team(x4) & a_opposing(s1) & Theme(s1,x4) & Actor(e1,x3) & of(x3,x4) & n_member(x3) & Theme(e1,x1) & v_tackle(e1) & n_player(x1) & of(x1,x2) & n_football(x2))
exists e1 x1 x2 x3.(-(x2 = x2) & n_team(x2) & in(e1,x3) & n_football(x3) & Theme(e1,x2) & Actor(e1,x1) & v_tackle(e1) & n_opponent(x1))