A group of kids have a pillow-fight.
Kids are having a pillow fight at a slumber party
Kid's can have a pillow fight at any time at home not just a slumber party.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & n_pillow-fight(x3) & of(x1,x2) & n_kid(x2) & n_group(x1))
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & at(x2,x4) & n_party(x4) & of(x4,x5) & n_slumber(x5) & n_fight(x2) & of(x2,x3) & n_pillow(x3) & n_kid(x1))