Man singing on a stage with band.
A man is performing on stage.
Singing is performing.
exists x1 x2 x3 x4.(a_topic(x1) & with(x1,x4) & n_band(x4) & on(x1,x3) & n_stage(x3) & n_singing(x1) & of(x1,x2) & n_man(x2))
exists e1 x1 x2.(on(e1,x2) & n_stage(x2) & Actor(e1,x1) & v_perform(e1) & n_man(x1))