A crowd of people gathered in front of a building at night.
The people are waiting inside the airport.
The people can't be in front of a building and inside of it.
exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & of(x1,x2) & at(e1,x6) & n_night(x6) & in(e1,x4) & of(x4,x5) & n_building(x5) & n_front(x4) & Theme(e1,x3) & v_gather(e1) & (x2 = x3) & n_people(x2) & n_crowd(x1))
exists e1 x1 x2.(n_airport(x2) & n_people(x1) & inside(e1,x2) & Actor(e1,x1) & v_wait(e1))