Several people on a stage with a blue background.
The people are acting in a play.
Just because people are on a stage doesn't mean they are acting in a play.
exists s1 s2 x1 x2 x3.(a_topic(x1) & with(x1,x3) & n_background(x3) & a_blue(s2) & Theme(s2,x3) & on(x1,x2) & n_stage(x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_people(x1) & in(e1,x2) & n_play(x2) & Actor(e1,x1) & v_act(e1))