A man in an airport waves at the camera.
The man is waving at the security camera.
All camera are not security camera
exists x1 x2 x3 x4.(n_camera(x4) & a_topic(x1) & in(x1,x2) & at(x2,x4) & n_wave(x2) & of(x2,x3) & n_airport(x3) & n_man(x1))
exists e1 x1 x2 x3.(n_camera(x2) & of(x2,x3) & n_security(x3) & n_man(x1) & at(e1,x2) & Actor(e1,x1) & v_wave(e1))