Group of people walk the streets in costumes with Asian characters on the back.
The people are going to a cos-play festival.
Group of people in costumes doesn't imply going to a cos-play festival.
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_back(x6) & n_street(x3) & ne_org_group(x1) & on(e1,x6) & in(e1,x4) & with(x4,x5) & n_character(x5) & a_asian(s1) & Theme(s1,x5) & n_costume(x4) & Theme(e1,x3) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_people(x2))
exists e1 s1 x1 x2.(n_people(x1) & to(e1,x2) & n_festival(x2) & a_cos-play(s1) & Theme(s1,x2) & Actor(e1,x1) & v_go(e1))