A couple look through a camera in Paris.
A couple are on vacation.
Not all couples in Paris are on vacation.
exists x1 x2 x3 x4.(ne_geo_paris(x4) & a_topic(x1) & through(x1,x3) & in(x3,x4) & n_camera(x3) & n_look(x1) & of(x1,x2) & n_couple(x2))
exists p1 x1.(exists x2.(on(x1,x2) & n_vacation(x2)) & n_couple(x1))