Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       Caelum veter. - region of the fixed stars
         (Constellation) Orion veter. - Ori
           (Star system) ζ Orionis - Alnitak
             054045.5-015634 (Star) ζ Orionis A
             054045.6-015634 (Star) ζ Orionis B