Complex sentence: "The Unquiet Dead" is an episode in the British science-fiction television series "Doctor Who" that was first broadcast on April 9,2005 and is the first episode of the revival to be set in the past.
Split into simpler sentences: The Unquiet Dead is an episode in the British science-fiction television series "Doctor Who" that was first broadcast on April 9,2005. It is the first episode of the revival to be set in the past.