People in costumes are standing outside.
There are people wearing costumes.
Costumes consist of wearing clothing
exists e1 s1 x1 x2.(a_outside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & in(x1,x2) & n_costume(x2) & n_people(x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_costume(x4) & (x2 = x3) & n_people(x2))