Some children play hockey outside.
Some children are playing hockey in the stadium.
Outside is not a stadium.
exists e1 s1 x1 x2.(a_outside(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_hockey(x2) & n_child(x1))
exists e1 x1 x2 x3.(n_stadium(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_hockey(x2) & n_child(x1))