The man in the green jacket is playing the piano next to a woman who is by a music stand.
a man is playing a song on a piano
The man could be playing the piano without playing a specific song.
exists e1 p1 s1 x1 x2 x3 x4 x5 x6.(n_piano(x3) & n_jacket(x2) & a_green(s1) & Theme(s1,x2) & n_man(x1) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & to(x4,x5) & exists x7 x8.(by(x6,x7) & n_stand(x7) & of(x7,x8) & n_music(x8)) & (x5 = x6) & n_woman(x5) & next(x3,x4) & n_thing(x4) & in(x1,x2))
exists e1 x1 x2 x3.(on(e1,x3) & n_piano(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_song(x2) & n_man(x1))