Question: Which of the creators of Ferb Fletcher was born born December 9, 1960?
Sentence (from "Jeff &quot;Swampy&quot; Marsh"): Jeff "Swampy" Marsh (born December 9, 1960) is an American animator, writer, director, producer, and voice actor associated with several animated television series, most notably as the co-creator, executive producer, and voice of Major Monogram of Disney's animated series "Phineas and Ferb".
Relevant evidence: Yes