Eight people sit on railroad tracks.
They are waiting for a train to come.
The eight people on the tracks are not necessarily waiting for a train to come.
exists e1 x1 x2 x3.(on(e1,x2) & n_track(x2) & of(x2,x3) & n_railroad(x3) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_8(x1))
exists e1 p1 x1.(for(e1,x1) & Topic(x1,p1) & exists e2.(Actor(e2,x1) & v_come(e2)) & n_train(x1) & Actor(e1,x1) & v_wait(e1) & n_thing(x1))