Four children are having a pillow fight.
Four children playing video games.
The children are either having a pillow fight or playing video games. Both activities are very different from each other.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_fight(x2) & of(x2,x3) & n_pillow(x3) & n_child(x1) & card_eq_4(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_game(x3) & of(x3,x4) & n_video(x4) & (x1 = x2) & n_child(x1) & card_eq_4(x1))