Three people standing at a station.
People are at a diner.
The people can't be at a station and at a diner simultaneously.
exists e1 x1 x2 x3.(a_topic(x1) & at(e1,x3) & n_station(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_people(x1) & card_eq_3(x1))
exists p1 x1.(exists x2.(at(x1,x2) & n_diner(x2)) & n_people(x1))