A man holding a sign on stage to a crowd of people while another plays guitar.
The man is on a stage.
" On stage" is a way of saying someone is on a stage.
exists e1 p1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & exists e2 x7 x8.(Theme(e2,x8) & Actor(e2,x7) & v_play(e2) & n_guitar(x8) & n_thing(x7)) & while(e1,p1) & to(e1,x5) & of(x5,x6) & n_people(x6) & n_crowd(x5) & on(e1,x4) & n_stage(x4) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & n_sign(x3) & (x1 = x2) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2.(on(x1,x2) & n_stage(x2)))