A girl plays her guitar on a dark stage.
The woman is in a band.
Just because a girl plays her guitar on a dark stage, one can not infer the girl is the same as a woman or that she is in a band. Girls of all ages can play guitars independently.
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_stage(x3) & a_dark(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & of(x2,x1) & n_female(x1) & n_girl(x1))
exists p1 x1.(n_woman(x1) & exists x2.(in(x1,x2) & n_band(x2)))