Task: Explanation
Input (English): Sigmar Heldenhammer is a fictional deity in the "Warhammer Fantasy" setting. He is the patron deity of The Empire. Before he became a god, Sigmar was a man, albeit an exceptional, perhaps even superhuman one. The young chieftain of the Unberogens who lived 2,500 years before the present day of the Warhammer universe, he united the barbarian human tribes into what would become the mightiest human nation – the Empire. His sign is a twin-tailed comet or a war hammer. Question: The political faction that Sigmar Heldenhammer is the patron deity of is based on what real-world empire? Answer: Holy Roman Empire
Output (English):  He is the patron deity of The Empire.