A group of men and women are singing a song.
A solo artist sings on stage.
The solo Artist singing on stage contradicts with the group of men and women singing a song.
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x5) & Actor(e1,x1) & v_sing(e1) & n_song(x5) & of(x1,x2) & n_woman(x4) & n_man(x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_group(x1))
exists x1 x2 x3 x4.(a_topic(x1) & on(x1,x4) & n_stage(x4) & n_sing(x1) & of(x1,x3) & n_artist(x3) & of(x1,x2) & n_solo(x2))