Complex sentence: The IAA is organized by the "Verband der Automobilindustrie" (VDA--Association of the German Automotive Industry) and is scheduled by the Organisation Internationale des Constructeurs d'Automobiles.
Split into simpler sentences: The IAA is organized by the "Verband der Automobilindustrie" (VDA--Association of the German Automotive Industry). The show is scheduled by the Organisation Internationale des Constructeurs d'Automobiles.