A choir in festive red stand facing the congregation of a church with a high, cavernous, arching ceiling.
The choir is singing a festive song.
The choir stands facing the congregation but this does not indicate that they are singing a festive song or any other type of song.  They could just as easily be singing another type of song or not singing at all.
exists e1 e2 s1 s2 s3 s4 s5 s6 x1 x2 x3 x4 x5 x6.(n_congregation(x4) & a_topic(x1) & in(x1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_face(e2) & of(x4,x5) & with(x5,x6) & n_ceiling(x6) & Actor(e1,x6) & v_arch(e1) & a_,(s6) & Theme(s6,x6) & a_cavernous(s5) & Theme(s5,x6) & a_,(s4) & Theme(s4,x6) & a_high(s3) & Theme(s3,x6) & n_church(x5) & (x2 = x3) & n_stand(x2) & a_red(s2) & Theme(s2,x2) & a_festive(s1) & Theme(s1,x2) & n_choir(x1))
exists e1 s1 x1 x2.(n_choir(x1) & Theme(e1,x2) & Actor(e1,x1) & v_sing(e1) & n_song(x2) & a_festive(s1) & Theme(s1,x2))