There is a group of nine young women wearing long black dresses holding folders, standing on metal bleachers and singing in front of a group of people.
The women are in a choir.
Standing on bleachers in black holding folders does not mean it is a  choir.
exists p1 x1 e4 e2 e3 e1 s1 s2 s3 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x13 x14.((x1 = x2) & in(e4,x12) & of(x12,x13) & of(x13,x14) & n_people(x14) & n_group(x13) & n_front(x12) & Actor(e4,x11) & v_sing(e4) & (x2 = x11) & on(e3,x9) & n_bleacher(x9) & of(x9,x10) & n_metal(x10) & Actor(e3,x8) & v_stand(e3) & (x2 = x8) & Theme(e2,x5) & Actor(e2,x4) & v_wear(e2) & Theme(e1,x7) & Actor(e1,x6) & v_hold(e1) & n_folder(x7) & (x5 = x6) & n_dress(x5) & a_black(s3) & Theme(s3,x5) & a_long(s2) & Theme(s2,x5) & (x2 = x4) & of(x2,x3) & n_woman(x3) & a_young(s1) & Theme(s1,x3) & card_eq_9(x3) & n_group(x2))
exists p1 x1.(n_woman(x1) & exists x2.(in(x1,x2) & n_choir(x2)))