An older male is playing a guitar on a wheelchair in a city street.
The man entertains with his guitar on the streets downtown.
The first sentence implies a disability and possibly playing guitar independently by saying on a wheelchair while the second sentence suggests more people there as he is entertaining and implies he moves around entertaining by saying plural of streets.
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 x1 x2 x3 x4.(n_downtown(x3) & of(x3,x4) & n_street(x4) & n_guitar(x2) & of(x2,x1) & n_male(x1) & n_man(x1) & with(e1,x2) & on(x2,x3) & Actor(e1,x1) & v_entertain(e1))