Question: Were both Escape to Witch Mountain and The Muppets films adapted from science fiction novels written by Alexander H. Key?
Sentence (from "The Muppets (film)"): The film is directed by James Bobin, written by Jason Segel and Nicholas Stoller, produced by David Hoberman and Todd Lieberman, and stars Segel, Amy Adams, Chris Cooper and Rashida Jones, as well as Muppet performers Steve Whitmire, Eric Jacobson, Dave Goelz, Bill Barretta, David Rudman, Matt Vogel, and Peter Linz.
Relevant evidence: Yes