Beautiful lights accent trees on a dark night.
The trees have no lights
The tree cannot be accented with beautiful lights if it has no ights.
exists s1 s2 s3 x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_night(x3) & a_dark(s3) & Theme(s3,x3) & n_tree(x1) & a_accent(s2) & Theme(s2,x1) & of(x1,x2) & n_light(x2) & a_beautiful(s1) & Theme(s1,x1))
exists x1.(n_tree(x1) & -exists e1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_light(x2)))