Four children, in uniforms of two different teams, are playing football.
Four children are playing hockey.
Children can either be playing football or hockey but not both.
exists e1 x1 x2 x3 x4 x5.(n_team(x5) & in(e1,x3) & of(x3,x4) & -(x4 = x5) & n_team(x4) & card_eq_2(x4) & n_uniform(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_football(x2) & n_child(x1) & card_eq_4(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_hockey(x2) & n_child(x1) & card_eq_4(x1))