Question: Writer Romeo Muller and actor Jackie Vernon worked in a 1976 animated Christmas television special which is owned by who? 
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: No