premise: Véronique Vendell (born Véronique Duraffourd, 21 July 1942) is a French actress. She appeared mainly in French and German productions, but had roles in both Peter Glenville's "Becket" and Sam Peckinpah's "Cross of Iron" and its sequel "Breakthrough".
hypothesis: All French Actresses appear in German productions
reason: French actresses could appear in German productions but not every French actress may choose to do so.  