A lead choir singer with the rest of the choir singing in the background of a concert hall.
The choir is dressed in black.
The choir does not have to be dressed in black.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(n_background(x5) & n_rest(x3) & a_topic(x1) & with(x1,x3) & of(x3,x2) & in(e1,x5) & of(x5,x6) & n_hall(x6) & of(x6,x7) & n_concert(x7) & Actor(e1,x4) & v_sing(e1) & (x2 = x4) & n_choir(x2) & n_choir(x2) & n_singer(x1) & of(x1,x2) & a_lead(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_choir(x1) & Theme(e1,s1) & Theme(s1,x2) & a_black(s1) & Theme(e1,x1) & v_dress(e1))