a guitarist with a black shirt on stage playing guitar and singing
A drummer without a shirt on performs on stage.
On person has a shirt the other is without a shirt.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & with(x1,x2) & on(x2,x3) & Theme(e1,x5) & Actor(e1,x4) & v_play(e1) & n_singing(x7) & n_guitar(x6) & subset_of(x7,x5) & subset_of(x6,x5) & (x3 = x4) & n_stage(x3) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_guitarist(x1))
exists x1.(a_topic(x1) & -exists x2 x3 x4.(with(x1,x2) & on(x2,x3) & on(x3,x4) & n_stage(x4) & n_perform(x3) & n_shirt(x2)) & n_drummer(x1))