Question: Thunderspire Labyrinth is the second in the three part series of adventures introducing the new 4th edition "Dungeons & Dragons" concept of what, he adventure, was written by Michael Mearls, a writer and designer of fantasy role-playing games (RPGs) and related fiction?
Sentence (from "Mike Mearls"): Michael Mearls is a writer and designer of fantasy role-playing games (RPGs) and related fiction.
Relevant evidence: Yes