Question: Third Man on the Mountain, which inspired the Matterhon Bobsleds at the Anaheim theme park, opened on July 17, 1955, was released in what year by Walt Disney Productions? 
Sentence (from "Disneyland"): It was originally the only attraction on the property; its official name was changed to Disneyland Park to distinguish it from the expanding complex in the 1990s.
Relevant evidence: No