A hockey player guards the goal.
The opposite team is trying to score on the hockey player who is guarding the goal.
Just because a hockey player guards the goal doesn't mean the opposite team is trying to score on the hockey player.
exists e1 x1 x2 x3.(n_goal(x3) & Theme(e1,x3) & Actor(e1,x1) & v_guard(e1) & n_player(x1) & of(x1,x2) & n_hockey(x2))
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7.(n_goal(x7) & n_player(x4) & of(x4,x5) & n_hockey(x5) & n_team(x1) & a_opposite(s1) & Theme(s1,x1) & to(e1,x3) & on(x3,x4) & Theme(e2,x7) & Actor(e2,x6) & v_guard(e2) & (x4 = x6) & n_score(x3) & Theme(e1,x2) & Actor(e1,x1) & v_try(e1) & n_thing(x2))