A football player is tackling another football player of the opposing team.
A player is tackled at a sporting event.
A football player is tackling another player in an event
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_team(x6) & a_opposing(s1) & Theme(s1,x6) & Theme(e1,x4) & Actor(e1,x1) & v_tackle(e1) & of(x4,x6) & n_player(x4) & of(x4,x5) & n_football(x5) & -(x4 = x1) & n_player(x1) & n_player(x1) & of(x1,x3) & n_football(x3) & of(x1,x2) & n_football(x2))
exists e1 s1 x1 x2.(at(e1,x2) & n_event(x2) & a_sporting(s1) & Theme(s1,x2) & Theme(e1,x1) & v_tackle(e1) & n_player(x1))