Kids are dressed in costume and playing a game.
Kids in costume play at cowboy's and Indians.
Just because Kids are dressed in costume and playing a game does not mean that they play at cowboy's and Indians.
exists e1 e3 e2 x1 x2 x3 x4.(for(e2,e3) & Theme(e3,x4) & Actor(e3,x3) & v_play(e3) & n_game(x4) & Theme(e2,x3) & v_dress(e2) & n_kid(x3) & in(e1,x2) & n_costume(x2) & Theme(e1,x1) & v_dress(e1) & n_kid(x1))
exists x1 x2 x3 x4 x5 x6 x7.(ne_nam_indians(x7) & a_topic(x1) & in(x1,x2) & at(x2,x4) & subset_of(x7,x4) & subset_of(x5,x4) & n_'s(x5) & of(x5,x6) & n_cowboy(x6) & n_play(x2) & of(x2,x3) & n_costume(x3) & n_kid(x1))