An airport crowded with people.
The airport is a ghost town.
The airport can't be crowded if it is alaso described as a ghost town.
exists e1 x1 x2.(with(e1,x2) & n_people(x2) & Actor(e1,x1) & v_crowd(e1) & n_airport(x1))
exists p1 x1.(n_airport(x1) & exists x2 x3.((x1 = x2) & n_town(x2) & of(x2,x3) & n_ghost(x3)))