Audience at an event with the stage lights as the backdrop.
People were waiting for the performers to take the stage.
The stage lights do not imply the beginning of the event. The people may not be waiting for the performers.
exists x1 x2 x3 x4 x5.(n_backdrop(x5) & n_light(x3) & of(x3,x4) & n_stage(x4) & a_topic(x1) & at(x1,x2) & as(x2,x5) & with(x2,x3) & n_event(x2) & n_audience(x1))
exists e1 p1 x1 x2 x3 x4.(n_stage(x4) & n_performer(x3) & Topic(e1,p1) & exists e2.(Theme(e2,x4) & Actor(e2,x1) & v_take(e2)) & for(e1,x3) & Actor(e1,x2) & v_wait(e1) & n_people(x2) & n_people(x1))