Dark bushes, siluettes of people, clouds.
There are clouds.
Bushes are not the same as clouds.
exists x1 x2 x3 x4 x5.(a_topic(x1) & rel(x1,x3) & of(x3,x4) & rel(x4,x5) & n_cloud(x5) & n_people(x4) & n_siluette(x3) & n_bush(x1) & (x1 = x2) & ne_nam_dark(x2))
exists p1 x1 x2.((x1 = x2) & n_cloud(x2))