A band playing in front of a sculpture for people at a concert.
There are no people at the concert.
The band can't be playing for people if there are no people at the concert.
exists x1 x2 x3 x4 x5 x6.(a_topic(x1) & at(x1,x6) & n_concert(x6) & for(x1,x5) & n_people(x5) & in(x1,x3) & of(x3,x4) & n_sculpture(x4) & n_front(x3) & n_playing(x1) & of(x1,x2) & n_band(x2))
exists p1 x1 x3.(n_concert(x3) & -exists x2.((x1 = x2) & at(x2,x3) & n_people(x2)))