Two people are sitting at a bus bench.
Two people standing at a train station.
The people cannot be standing and sitting simultaneously. The people cannot be at a bus bench and train station simultaneously.
exists e1 x1 x2 x3.(at(e1,x2) & n_bench(x2) & of(x2,x3) & n_bus(x3) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x3) & n_station(x3) & of(x3,x4) & n_train(x4) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))