Three people wearing costumes are standing around talking.
The trio are not in normal clothes.
It's reasonable to assume that people in costumes are not in normal clothes.
exists e3 e2 e1 x1 x2 x3.(around(e2,e3) & Actor(e3,x1) & v_talk(e3) & Actor(e2,x1) & v_stand(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_costume(x3) & (x1 = x2) & n_people(x1) & card_eq_3(x1))
exists x1.(n_trio(x1) & -exists p1 s1 x2.(in(x1,x2) & n_clothes(x2) & a_normal(s1) & Theme(s1,x2)))