People stroll outdoors at the airport.
People are near airplanes
at the airport implies they are near airplanes.
exists e1 x1 x2 x3.(n_airport(x3) & at(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_stroll(e1) & n_outdoors(x2) & n_people(x1))
exists p1 x1.(exists s1 x2.((x1 = x2) & n_airplane(x2) & a_near(s1) & Theme(s1,x2)) & n_people(x1))