An older male is playing a guitar on a wheelchair in a city street.
The man plays and sings his own original songs.
Just because someone is playing a guitar on a city street does not mean they are singing their original songs. It is possible to sing popular songs by the road. Also just because a man is playing a guitar does not mean he is also singing, you can play a guitar without singing.
exists e1 s1 x1 x2 x3 x4 x5.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & on(x2,x3) & in(x3,x4) & n_street(x4) & of(x4,x5) & n_city(x5) & n_wheelchair(x3) & n_guitar(x2) & n_male(x1) & r_more(s1) & a_older(s1) & Theme(s1,x1))
exists e1 e2 s1 s2 s3 s4 x1 x2 x3 x4.(n_song(x4) & a_original(s4) & Theme(s4,x4) & a_own(s3) & Theme(s3,x4) & of(x4,x3) & n_male(x3) & n_man(x1) & n_song(x2) & a_original(s2) & Theme(s2,x2) & a_own(s1) & Theme(s1,x2) & of(x2,x1) & n_male(x1) & Theme(e2,x4) & Actor(e2,x1) & v_sing(e2) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1))