Complex sentence: The album presents the vague story of a rock and roll character called Ziggy Stardust, the human manifestation of an alien being who attempts to present humanity with a message of hope in the last five years of its existence.
Split into simpler sentences: The album presents, albeit vaguely, the story of a rock and roll character called "Ziggy Stardust". Ziggy is the human manifestation of an alien being who is attempting to present humanity with a message of hope in the last five years of its existence.