Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       Caelum veter. - region of the fixed stars
         (Constellation) Orion veter. - Ori
           (Star system) θ¹ Orionis
             053515.9-052314 (Star) θ¹ Orionis A
             053516.1-052307 (Star) θ¹ Orionis B
             053516.5-052323 (Star) θ¹ Orionis C
             053517.3-052316 (Star) θ¹ Orionis D