A smiling young child is wearing a costume.
It is Halloween.
We cannot assumed that just because a child is wearing a costume that's it's a Halloween costume.
exists e1 e2 s1 x1 x2.(Theme(e2,x2) & Actor(e2,x1) & v_wear(e2) & n_costume(x2) & n_child(x1) & a_young(s1) & Theme(s1,x1) & Actor(e1,x1) & v_smile(e1))
exists p1 x1 x2.(ne_org_halloween(x2) & n_thing(x1) & (x1 = x2))