Four women pose in their alien costumes.
Four men are in costume.
There can either be four women or four men.
exists e1 s1 x1 x2.(in(e1,x2) & n_costume(x2) & a_alien(s1) & Theme(s1,x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_pose(e1) & n_woman(x1) & card_eq_4(x1))
exists p1 x1.(exists x2.(in(x1,x2) & n_costume(x2)) & n_man(x1) & card_eq_4(x1))