Question: Aiko, Princess Toshi is the only child of Crown Prince Naruhito and what princess who was born on December 9, 1963, and is a member of the Imperial house of Japan through marriage?
{'answer': 'Masako, Crown Princess of Japan', 'supporting_facts': [['Aiko, Princess Toshi', 0], ['Masako, Crown Princess of Japan', 0], ['Masako, Crown Princess of Japan', 1]]}