Complex sentence: It was originally broadcast as a three-part miniseries on the "ABC Weekend Special" series on October 4,11 and 18,1980 and is also the first animated special to be shown in three parts on consecutive Saturday mornings.
Split into simpler sentences: It was originally broadcast as a three-part miniseries on "ABC Weekend Special" on October 4,11 and 18,1980. It is also the first animated TV special to be shown in three parts on consecutive Saturday mornings.