Multiple people walking on the pavement with a fence in the background all under the sky with clouds.
They are all alone.
If there are multiple people, they are not alone.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_sky(x7) & n_background(x6) & n_pavement(x4) & a_topic(x1) & with(e1,x8) & n_cloud(x8) & under(e1,x7) & a_all(s1) & Manner(e1,s1) & with(e1,x5) & in(x5,x6) & n_fence(x5) & on(e1,x4) & Actor(e1,x3) & v_walk(e1) & (x1 = x3) & n_people(x1) & (x1 = x2) & ne_nam_multiple(x2))
exists s1 s2 x1.(n_thing(x1) & a_all(s2) & Manner(s1,s2) & Theme(s1,x1) & a_alone(s1))