A large group of people waiting at a train station.
People are waiting at an airport.
Train station is not an airport
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & of(x1,x2) & at(e1,x4) & n_station(x4) & of(x4,x5) & n_train(x5) & Actor(e1,x3) & v_wait(e1) & (x2 = x3) & n_people(x2) & n_group(x1) & a_large(s1) & Theme(s1,x1))
exists e1 x1 x2.(at(e1,x2) & n_airport(x2) & Actor(e1,x1) & v_wait(e1) & n_people(x1))