Two children are playing ice hockey on frozen ground outside.
The children are playing hockey outside.
Children are playing hockey outside is the same as children are playing hockey outside.
exists e1 s1 x1 x2 x3 x4 x5.(on(e1,x4) & n_outside(x4) & of(x4,x5) & n_ground(x5) & a_frozen(s1) & Theme(s1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_hockey(x2) & of(x2,x3) & n_ice(x3) & n_child(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(n_child(x1) & a_outside(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_hockey(x2))