Two girls in zombie costumes.
Two girls dressing up for halloween.
When  dressing up for Halloween girls might choose zombie costumes.
exists x1 x2 x3.(a_topic(x1) & in(x1,x2) & n_costume(x2) & of(x2,x3) & n_zombie(x3) & n_girl(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_up(s1) & Manner(e1,s1) & for(e1,x3) & n_halloween(x3) & Actor(e1,x2) & v_dress(e1) & (x1 = x2) & n_girl(x1) & card_eq_2(x1))