Question: What is the name of the Japanese Period drama based on the 18th-century historical event when leaderless samurai avenged the death of their master?
{'answer': 'Akō Rōshi', 'supporting_facts': [['Akō Rōshi (1979 TV series)', 0], ['Akō Rōshi (1979 TV series)', 2], ['Forty-seven rōnin', 0]]}