An older black man plays an electric guitar on the sidewalk.
An old man plays the guitar.
Playing an electric guitar implies that you are playing a guitar.
exists e1 s1 s2 s3 x1 x2 x3.(n_sidewalk(x3) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & a_electric(s3) & Theme(s3,x2) & n_man(x1) & a_black(s2) & Theme(s2,x1) & r_more(s1) & a_older(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_guitar(x2) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_man(x1) & a_old(s1) & Theme(s1,x1))