A blue-painted Rock musician poses on the sidewalk.
The sidewalk has a person who plays music on it.
poses  doesn't always mean play music
exists e1 s1 x1 x2 x3.(n_sidewalk(x3) & on(e1,x3) & Actor(e1,x1) & v_pose(e1) & n_musician(x1) & (x1 = x2) & ne_per_rock(x2) & a_blue-painted(s1) & Theme(s1,x1))
exists e2 e1 x1 x2 x3 x4.(n_thing(x1) & n_sidewalk(x1) & Theme(e2,x2) & Actor(e2,x1) & v_have(e2) & on(e1,x1) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_music(x4) & (x2 = x3) & n_person(x2))