Question: Which film has the director who is older, Pallavi Anu Pallavi or Mutant Aliens?
Sentence (from "Bill Plympton"): Bill Plympton( born April 30, 1946) is an American animator, graphic designer, cartoonist, and filmmaker best known for his 1987 Academy Awards- nominated animated short" Your Face" and his series of shorts" Guard DogGuide DogHot Dog", and" Horn Dog".
Relevant evidence: Yes