People are waiting with their luggage at an airport check-in.
A very long line of people are waiting to check in for their flights.
That people are waiting does not mean they form a very long line.
exists e1 x1 x2 x3 x4.(at(e1,x3) & n_check-in(x3) & of(x3,x4) & n_airport(x4) & with(e1,x2) & n_luggage(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_wait(e1) & n_people(x1))
exists e1 p1 s1 x1 x2 x3.(Topic(e1,p1) & Actor(e1,x1) & v_wait(e1) & exists e2 s2.(for(e2,x3) & a_in(s2) & Manner(e2,s2) & Actor(e2,x1) & v_check(e2)) & n_flight(x3) & of(x3,x1) & n_thing(x1) & of(x1,x2) & n_people(x2) & n_line(x1) & a_long(s1) & Theme(s1,x1) & r_very(x1))