Question: Who voiced the title character in a 30-minuted animated film based on a song written by Leonard Lipton and Peter Yarrow?
Sentence (from "Puff, the Magic Dragon"): "Puff, the Magic Dragon" (or "Puff") is a song written by Leonard Lipton and Peter Yarrow, and made popular by Yarrow's group Peter, Paul and Mary in a 1963 recording.
Relevant evidence: Yes