A man playing a guitar and a man dancing are entertaining a couple sitting on a ledge by the street.
The man was using the guitar as a prop.
Just because, the man is playing the guitar does not imply that the man is using the guitar as a prop.
exists e1 e2 e3 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10.(n_street(x10) & Theme(e3,x7) & Actor(e3,x1) & v_entertain(e3) & by(x7,x10) & on(e2,x9) & n_ledge(x9) & Actor(e2,x8) & v_sit(e2) & (x7 = x8) & n_couple(x7) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & subset_of(x5,x3) & n_dancing(x5) & of(x5,x6) & n_man(x6) & subset_of(x4,x3) & n_guitar(x4) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3.(n_guitar(x2) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_use(e1) & as(x2,x3) & n_prop(x3))