Question: What American supernatural drama television series that premiered on CBS on September 21, 1994, has a spin off series called Promised Land?
Sentence (from "List of Supernatural episodes"): "Supernatural" is an American supernatural drama television series, created by Eric Kripke, that follows brothers Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles) as they travel throughout the United States hunting supernatural creatures.
Relevant evidence: No