Complex sentence: Rankin's last producing credit was on the 1999 animated version of "The King and I"; he was an uncredited supervising animator in "The Fox and the Hound" and "The Black Cauldron".
Split into simpler sentences: Rankin's last producing credit was on the 1999 animated version of "The King and I". He was an uncredited supervising animator in "The Fox and the Hound" and "The Black Cauldron".