A woman with a black jacket sitting down while playing a piano.
The woman is a piano teacher.
The woman does not have to be a piano teacher to play the piano.
exists e1 e2 s1 s2 x1 x2 x3 x4.(a_topic(x1) & with(x1,x2) & while(e1,e2) & Theme(e2,x4) & Actor(e2,x3) & v_play(e2) & n_piano(x4) & a_down(s2) & Manner(e1,s2) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_jacket(x2) & a_black(s1) & Theme(s1,x2) & n_woman(x1))
exists p1 x1.(n_woman(x1) & exists x2 x3.((x1 = x2) & n_teacher(x2) & of(x2,x3) & n_piano(x3)))