People waiting to get on a train.
A group of people are standing next to each other.
JUST BECAUSE PEOPLE ARE STANDING NEXT TO EACH OTHER DOESN'T MEAN THEY ARE WAITING FOR A TRAIN.
exists e1 p1 x1 x2.(a_topic(x1) & Topic(e1,p1) & Actor(e1,x2) & v_wait(e1) & exists e2 x3.(on(e2,x3) & n_train(x3) & Actor(e2,x2) & v_get(e2)) & (x1 = x2) & n_people(x1))
exists e1 x1 x2.(all x3.(n_other(x3) -> to(e1,x3)) & r_next(e1) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))