Someone parachutes, with an American flag waving behind him.
The person is flying a plane.
the one who parachutes cannot also be flying a plane
exists e1 s1 x1 x2 x3.(a_topic(x1) & with(x1,x2) & behind(e1,x1) & n_male(x1) & Actor(e1,x3) & v_wave(e1) & (x2 = x3) & n_flag(x2) & a_american(s1) & Theme(s1,x2) & n_parachute(x1))
exists e1 x1 x2.(n_person(x1) & Theme(e1,x2) & Actor(e1,x1) & v_fly(e1) & n_plane(x2))