Audience at an event with the stage lights as the backdrop.
They are watching the stage.
The audience may be watching something other than the stage.
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 x1 x2.(n_stage(x2) & n_thing(x1) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1))