The Seattle Belly Dancers competition contest.
The girls are singing in the contest.
A competition for dancers doesn't entail singing.
exists x1 x2 x3 x4 x5.(n_competition(x1) & (x1 = x4) & ne_org_dancers(x4) & (x1 = x3) & ne_org_belly(x3) & (x1 = x2) & ne_org_seattle(x2) & a_topic(x1) & Time(x1,x5) & n_contest(x5))
exists e1 x1 x2.(n_contest(x2) & n_girl(x1) & in(e1,x2) & Actor(e1,x1) & v_sing(e1))