A man in black clothing plays electric guitar on stage.
No one is on the stage
If the man is on the stage then you could not say that no one is on stage.
exists e1 s1 s2 x1 x2 x3 x4.(on(e1,x4) & n_stage(x4) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_guitar(x3) & a_electric(s2) & Theme(s2,x3) & in(x1,x2) & n_clothing(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
exists x2.(n_stage(x2) & -exists p1 x1.(on(x1,x2) & n_one(x1)))