Rear view of a choir group standing on risers with a chair filling a space between the risers.
A choir group is flying in the sky.
They could not be flying if they were standing on risers both cannot be done at the same time.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & of(x1,x2) & for(e1,e2) & Theme(e2,x7) & Actor(e2,x4) & v_fill(e2) & between(x7,x5) & n_riser(x5) & n_riser(x5) & n_space(x7) & with(e1,x6) & n_chair(x6) & on(e1,x5) & Actor(e1,x4) & v_stand(e1) & (x2 = x4) & n_group(x2) & of(x2,x3) & n_choir(x3) & n_view(x1) & a_rear(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_sky(x3) & in(e1,x3) & Actor(e1,x1) & v_fly(e1) & n_group(x1) & of(x1,x2) & n_choir(x2))