Question: Who is began his career on "The Muppet Show," Frank Oz or Andrzej Wajda?
Sentence (from "Frank Oz"): His career began as a puppeteer, where he performed the Muppet characters of Miss Piggy, Fozzie Bear, Animal, and Sam Eagle in "The Muppet Show", and Cookie Monster, Bert, and Grover in "Sesame Street".
Relevant evidence: Yes