A bright wall painting on the street.
A mural of a sunset.
Not all paintings are a mural.
exists s1 x1 x2 x3.(n_street(x3) & a_topic(x1) & on(x1,x3) & n_painting(x1) & of(x1,x2) & n_wall(x2) & a_bright(s1) & Theme(s1,x1))
exists x1 x2.(a_topic(x1) & of(x1,x2) & n_sunset(x2) & n_mural(x1))