Four children are having a pillow fight.
Kids are having fun.
Pillow fights are a form of having fun while hitting someone without worry of harm.
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.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_fun(x2) & n_kid(x1))