Question: Frosty's Winter Wonderland is a 1976 animated Christmas television special that is a sequel to an animated Christmas special that first aired on December 7th, 1969, that features what comedian as the film's narrator?
Sentence (from "Frosty's Winter Wonderland"): Frosty's Winter Wonderland is a 1976 animated Christmas television special and a sequel to the 1969 special "Frosty the Snowman", produced by Rankin/Bass Productions.
Relevant evidence: Yes