Man is playing his guitar in the street.
The man is singing.
Playing your guitar does not have to include singing.
exists e1 x1 x2 x3.(n_street(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & of(x2,x1) & n_male(x1) & n_man(x1))
exists e1 x1.(n_man(x1) & Actor(e1,x1) & v_sing(e1))