three people inside of an airport waiting for a flight
They are waiting to get on a plane because they are on vacation.
Just because people are inside of an airport waiting for a flight that does not mean they are on vacation.
exists e1 x1 x2 x3 x4.(a_topic(x1) & for(e1,x4) & n_flight(x4) & Actor(e1,x3) & v_wait(e1) & (x1 = x3) & of(x1,x2) & n_airport(x2) & r_inside(x1) & n_people(x1) & card_eq_3(x1))
exists e1 p1 x1.(n_thing(x1) & n_thing(x1) & Topic(e1,p1) & Actor(e1,x1) & v_wait(e1) & exists e2 p2 x2.(exists p3 x3.(on(x1,x3) & n_vacation(x3)) & because(e2,p2) & on(e2,x2) & n_plane(x2) & Actor(e2,x1) & v_get(e2)))