Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Context : Beyond Witch Mountain is a 1982 made-for-television film and the second sequel to Escape to Witch Mountain (1975) produced by Walt Disney Productions which originally aired on CBS as an episode of Walt Disney on February 20, 1982.
Answer : Escape to Witch Mountain
The Beyond Witch Mountain is based upon what?