Complex sentence: A deleted scene features Homer (as a walrus) gives Marge (as a panther) a back scratch she coughs up a hair ball and Dr. Hibbert plans on changing the whole animals back into humans.
Split into simpler sentences: A deleted scene features Homer (as a walrus) giving Marge (as a panther) a back scratch. Marge then coughs up a hair ball and Dr. Hibbert plans on changing the animal hybrids back into humans.