Several children are playing hockey on opposing teams and attempting to score a goal.
The children are playing ice hockey.
They could also be playing street or field hockey, as hockey is not an ice only sport.
exists e3 e1 e2 s1 x1 x2 x3 x4 x5 x6 x7.(Theme(e3,x2) & Actor(e3,x1) & v_play(e3) & to(e2,x7) & n_score(x7) & Theme(e2,x6) & Actor(e2,x5) & v_attempt(e2) & n_goal(x6) & (x2 = x5) & Theme(e1,x4) & Actor(e1,x3) & v_oppose(e1) & n_team(x4) & (x2 = x3) & n_hockey(x2) & n_child(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_child(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_hockey(x2) & of(x2,x3) & n_ice(x3))