people on a miniature train.
People on a train.
Both subjects are on a train
exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & n_train(x2) & of(x2,x3) & n_miniature(x3) & n_people(x1))
exists x1 x2.(a_topic(x1) & on(x1,x2) & n_train(x2) & n_people(x1))