Some of the trees on the side of the track are beginning to change color with the season.
The some of the leaves on the trees near the track are not green.
change color implies they are not green.
exists e1 p1 x1 x2 x3 x4 x6.(n_season(x6) & n_track(x4) & n_side(x3) & n_tree(x2) & Topic(e1,p1) & Actor(e1,x1) & v_begin(e1) & exists e2 x5.(with(e2,x6) & Theme(e2,x5) & Actor(e2,x1) & v_change(e2) & n_color(x5)) & of(x1,x2) & on(x2,x3) & of(x3,x4) & n_thing(x1))
exists x1 x2 x3 x4.(n_track(x4) & n_tree(x3) & n_leaf(x2) & n_some(x1) & -exists s1.(Theme(s1,x1) & a_green(s1)) & of(x1,x2) & on(x2,x3) & near(x3,x4))