Question: Which production company produced both Frosty the Snowman in 1969 and Frosty's Winter Wonderland in 1976?
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