Question: The Cortex System is a generic RPG system based on the "Sovereign Stone System ", and was developed by Margaret Weis Productions, Ltd for the Serenity Role Playing Game, a science fiction role-playing game released in which year, and set in the universe of the movie "Serenity"?
Sentence (from "Cortex System"): The Cortex System is a generic RPG system based on the "Sovereign Stone System ", and was developed by Margaret Weis Productions, Ltd for the Serenity Role Playing Game.
Relevant evidence: Yes