An audience listening to a concert.
People are listening to a concert.
there is an audience at a concert.
exists x1 x2 x3.(a_topic(x1) & to(x1,x3) & n_concert(x3) & n_listening(x1) & of(x1,x2) & n_audience(x2))
exists e1 x1 x2.(to(e1,x2) & n_concert(x2) & Actor(e1,x1) & v_listen(e1) & n_people(x1))