A man in a black shirt is holding playing music on a street.
The man is standing on a stage as he plays the guitar.
either playing music or plays the guitar are cannot be performed at a time.
exists e2 e1 s1 x1 x2 x3 x4.(Theme(e2,x3) & Actor(e2,x1) & v_hold(e2) & on(x3,x4) & n_street(x4) & n_music(x3) & Actor(e1,x3) & v_play(e1) & in(x1,x2) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
exists e1 p1 x1 x2 x3.(n_guitar(x3) & n_male(x1) & n_man(x1) & exists e2.(Theme(e2,x3) & Actor(e2,x1) & v_play(e2)) & as(e1,p1) & on(e1,x2) & n_stage(x2) & Actor(e1,x1) & v_stand(e1))