A woman in a formal gown plays a guitar and sings into a microphone headset.
A women wearing formal gown  and tune guitar and sings
A woman in a formal gown implies she is wearing formal gown. Plays a guitar is rephrased as tunes guitar.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(into(e1,x6) & n_headset(x6) & of(x6,x7) & n_microphone(x7) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_sing(x5) & n_guitar(x4) & subset_of(x5,x3) & subset_of(x4,x3) & in(x1,x2) & n_gown(x2) & a_formal(s1) & Theme(s1,x2) & n_woman(x1))
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(a_topic(s1) & subset_of(x7,s1) & n_sing(x7) & subset_of(x1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_guitar(x5) & of(x5,x6) & n_tune(x6) & n_gown(x4) & subset_of(x5,x3) & subset_of(x4,x3) & a_formal(s2) & Theme(s2,x3) & (x1 = x2) & n_woman(x1))