premise: Lucki Stipetić (also Lucki Herzog) is a German film producer, and the younger half brother of filmmaker Werner Herzog. Stipetić is the official head of Werner Herzog Filmproduktion, the production company which has produced almost all of Herzog's films.
hypothesis: Lucki Stipetić and Werner Herzog have the same mother and father.
reason: It is mentioned that Werner Herzog is the half-brother to Lucki Stipetić, which means they either share the same mother or father, but not both.