A group of people are standing on sidewalk behind a metal barrier.
A group of dogs are running
A group of people are not dogs.
exists e1 x1 x2 x3 x4 x5.(behind(e1,x4) & n_barrier(x4) & of(x4,x5) & n_metal(x5) & on(e1,x3) & n_sidewalk(x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2.(Actor(e1,x1) & v_run(e1) & of(x1,x2) & n_dog(x2) & n_group(x1))