An acoustic guitar is played by a busking street performer.
An acoustic guitar is played by a musician.
A busking street performer must be a musician.
exists e1 s1 x1 x2 x3 x4.(Actor(e1,x2) & n_performer(x2) & of(x2,x4) & n_street(x4) & of(x2,x3) & n_busking(x3) & Theme(e1,x1) & v_play(e1) & n_guitar(x1) & a_acoustic(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(Actor(e1,x2) & n_musician(x2) & Theme(e1,x1) & v_play(e1) & n_guitar(x1) & a_acoustic(s1) & Theme(s1,x1))