A group of young girls wearing blue tops and black skirts standing behind blue music stands.
Several friends are standing behind music stands.
Group of young girls standing behind music stands doesn't mean they're friends.
exists e2 e1 s1 s2 s3 s4 x1 x2 x3 x4 x5 x6.(behind(e2,x5) & n_stand(x5) & of(x5,x6) & n_music(x6) & a_blue(s4) & Theme(s4,x5) & Actor(e2,x4) & v_stand(e2) & n_skirt(x4) & a_black(s3) & Theme(s3,x4) & Theme(e1,x3) & Actor(e1,x1) & v_wear(e1) & n_top(x3) & a_blue(s2) & Theme(s2,x3) & of(x1,x2) & n_girl(x2) & a_young(s1) & Theme(s1,x2) & n_group(x1))
exists e1 s1 x1 x2 x3.(behind(e1,x2) & n_stand(x2) & of(x2,x3) & n_music(x3) & Actor(e1,x1) & v_stand(e1) & n_friend(x1) & a_several(s1) & Theme(s1,x1))