Question: Which American science fiction role-playing game, is based on Christopher Moeller's two critically acclaimed "Iron Empires" graphic novels?
{'answer': 'Burning Empires', 'supporting_facts': [['Christopher Moeller', 0], ['Christopher Moeller', 2], ['Burning Empires (role-playing game)', 0], ['Burning Empires (role-playing game)', 1]]}