Many people are in a group and walking in between two trains.
cats walking between trains
People are not cats.
exists p1 x1.(exists x2 x3 x4 x5 x6.(in(x1,x2) & subset_of(x4,x2) & between(x5,x6) & n_train(x6) & card_eq_2(x6) & in(x4,x5) & n_thing(x5) & n_walking(x4) & subset_of(x3,x2) & n_group(x3)) & n_people(x1) & n_quantity(x1))
exists e1 x1 x2 x3.(a_topic(x1) & between(e1,x3) & n_train(x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_cat(x1))