Question: What is the name of the author who wrote a series of two science fiction novels, about beings who have taken on the roles of the Greek gods, which makes references to a novel written by a Russian author known by the pen name Vladimir Sirin?
{'answer': 'Dan Simmons', 'supporting_facts': [['Ilium/Olympos', 0], ['Ilium/Olympos', 1], ['Ilium/Olympos', 2], ['Vladimir Nabokov', 0]]}